It is not because of our purpose that we exists, it is because of the purpose of our Creator. Have you ever reflected on this? We are not just existing aimlessly, we have a purpose. That is the first point in this argument. We are not like animals who live only to eat and mate, we have specific purposes as humans. You have a purpose and I have a purpose. What is your purpose? Have you ever waited to find out?
Our purpose is the purpose of God. We do not have any purpose of our own. We are not the ones who formed ourselves so we do not have the final say about what our purpose is. God formed us and made. The way He made us was for a purpose. Therefore we should understand that what He made us for must become our priority in life.
What is the purpose of God for our life? The Bible clearly stated this. We are created to be holy. If you are spending your time living in unholiness, you are serving your flesh and the devil. You are not serving God if you are not living holy.
Another purpose of God for our life is to show forth his praises. We are to praise and glorify God everytime everywhere. We were created so that we should worship and praise God. Also we are created for good works.
In general we are created to exist for the pleasure of God. If you are not exiting for the pleasure of God then you are not worth existence at all.