There are so many reasons to this question, but what could be the #1 answear for this?
Only the bible can answer the meaning of life Genesis 1:27-31. The last part of Revelation 4:11 answers: “Because of your will they [all created things] existed and were created.” We did not will ourselves into existence. We exist because of God’s will. For this reason, life lived solely for self-interest is empty and meaningless. To find inner peace, joy, satisfaction, and fulfillment, we need to learn what God’s will is and then bring our life into harmony with it. Only then will we find the purpose of our creation and existence.—Psalm 40:8. Over eight million people from many nations have accepted the bible's answer to the meaning of life. You can too.
For more information on this subject and others, please go to jw.org "Online Library." Also for free downloads, publications or read online.
interestingly, God did not predestine the future of each individual, either by divine intervention or by some biological process. Although we are influenced by our genetic inheritance, we are largely in control of our actions. We are all free to choose our own course in life.
While it is up to each of us to choose what to do with our life, it would be a mistake to exclude the Creator from our deliberations. Actually, many have discovered that real meaning and purpose in life is bound up in a relationship with God. The vital connection between God and our purpose in life is highlighted in God’s personal name, Jehovah, which literally means, “He Causes to Become.” (Exodus 6:3; Psalm 83:18) That is, he progressively fulfills whatever he promises and always accomplishes what he has set out to do. (Exodus 3:14; Isaiah 55:10, 11) Think about that. The name Jehovah is a pledge to all of us that he is the ultimate and enduring Source of meaningful purpose.
Solomon was in a unique position. He could well comment on how to find happiness and meaning in life. Blessed with extraordinary wisdom, enormous wealth, and kingly authority, he was able to make a careful search of human pursuits, including the quest for riches and prominence. (Ecclesiastes 2:4-9; 4:4) Then, under divine inspiration, he summed up his findings, saying: “The conclusion of the matter, everything having been heard, is: Fear the true God and keep his commandments. For this is the whole obligation of man.” (Ecclesiastes 12:13)
The meaning of life involves the doing of God's will.