One mistake to make is to see the Bible as a religious book ... and we have all made that mistake at a point. One of the questions usually asked religious people is "if Heaven is a beautiful place, why not just die and go to heaven?" . I have been asked this question before and so I intend to attempt an answer to this question.

This question as it sounds has nothing to do with the destination or the end of man but this is a question of purpose . Over 7.2 billion of us on this planet called earth is struggling to answer this same question - the question of purpose. This is also a question of the truth about the world and the truth about how it came into being. The truth of a thing or a person can be defined as the quality of being in accordance with the standard set by the "originator" .  Therefore; the truth about a mobile phone is defined in the purpose of its creation. The same way the truth about tv is in the "mind of the manufacturer". If everything which exists has a purpose, then we can be sure that there is this great Creator and has a purpose for everything made. However, if we also assume that the earth came about by a big bang, or humans came by as a result of years of evolution of animals into humans, how then are we able to answer the question of the purpose of man ? This will rule out the essence of purpose and the reason we're not on anyother planet apart from earth. 

Why Humans Can Only Find Their Purpose In God

The Holy Bible is the greatest book on this earth that gives detailed accounts not only of things that happened in history but also contains the words of the creator about His creation. If we know that God is the creator of the universe and humans, we should be able to explain why he created us. In other words, if God is the creator, He should be able to tell us why He created us . One thing that has to be clear to us is that God did not create anything that is useless. However, when we do not know the reason why some things are made, we will simply abuse it. For example, when you do not know the proper use of marijuana, you will simply abuse it. This does not mean the plant is bad, but it is rather being misused. 

 "when the purpose of a thing is not known, abuse is inevitable."

Every company or business has its vision and mission statement in their manuals, reports and publications. The same way the purpose of humans is stated in the first book of the Bible, Genesis 1:26 "Then God said, “Let Us make man in Our image, according to Our likeness; LET THEM HAVE DOMINION over the fish of the sea, over the birds of the air, and over the cattle, over all the earth and over every creeping thing that creeps on the earth.” This verse explains and simplifies the purpose of mankind. So the Bible can be simplified like this: God (King of Heaven) created the earth and put His children there to influence earth with the principles of the Kingdom of Heaven. As simple as that!  Psalm 115:16 says The heaven, even the heavens, are the Lord’s; But the earth He has given to the children of men. And so the only place God has given to man to have dominion is the planet earth. The words used in the Bible such as Kingdom, dominion, church ...etc are not religious words. They are words found in governance. Jesus' message was misunderstood by many and I think it is because since he was quoting from the same Bible that the religious leaders also used, people were expecting him to preach a religious message, however, Jesus' mission and message on earth was centred not on his miraculous birth, not on the miracles he performed, but on a Kingdom - the Kingdom of Heaven which he said is here. 

The word dominion used in Genesis 1:26 means to have sovereignty, control or supremacy over a territory. In an earlier article titled Is The Kingdom of God An Actual Place? I explained briefly how kingdoms operate and the essence of the Kingdom of God on earth. Jesus taught his disciples to pray for the Kingdom of God to come on earth and to establish God's will on earth just like it is done in Heaven in Matthew 6:9-13. It is only when we are restored to God's kingdom that we can have true success. 

So why won't I go to heaven?

This physical body gives me the right to stay on earth and to influence the earth with the Kingdom of God (see it as colonization of earth by God through His children which are you and me). My place of rest is determined after I have represented my country on earth. Just like how ambassadors are rewarded for good service. Since man lost his place of dominion, we have come up with ideas of religion to define the purpose of man and one of such ideas is called science. 

Divine Assignment

Since God made everything with purpose, we have to be in the perfect putpose of God to be able to truelly have purpose and meaning to our lives. Humans have drifted away from God and so since God does not want us to die in our sins and be punished for not carrying out our assignment, He sent his son to come and die so we have eternal life. Why must Jesus die? because everything is cleansed with blood, and without the shedding of the blood there is no forgiveness. Hebrews 9:22.
But this act of love demonstrated by God will not deal with the problem of the sin of men unless men are accept Him and reconciled to God. For this reason, Jesus Christ who is the only one who came directly from Heaven gave us some assignments to do.

"...All this is from God, who reconciled us to himself through Christ AND GAVE US THE MINISTRY OF RECONCILIATION: that God was reconciling the world to himself in Christ, not counting people’s sins against them. And he has committed to us the message of reconciliation. We are therefore Christ’s ambassadors, as though God were making his appeal through us. We implore you on Christ’s behalf: Be reconciled to God.
 (2 Corinthians 5:17-20)

This is why you can't kill yourself and go - you have a work to do on earth.

For we are His workmanship, created in Christ Jesus for good works, which God prepared beforehand that we should walk in them. - (Ephesians 2:10)

You were created in Christ Jesus to the GOOD WORKS of God which God prepared for you to do before you were born. The good work is the work of an ambassador (evangelist)

But you be watchful in all things, endure afflictions, DO THE WORK OF AN EVANGELIST, fulfil your ministry. - 2 Timothy 4:5

Beloved, you'll have to be born again! Being born again is not a religious initiation act. It is God's divine way by which man will be reconciled back to God and experience the Kingdom of God on earth and also in eternity when you leave this body. 
Let's not forget that we shall all die someday. Although we know not when, we can escape the consequences of our sins only through Christ Jesus and not any religion.