1-Nothing, there is no meaning of life. We are here by accident
2-To worship God
. We are here to worship a potentially nonexistent being created most likely by man over 5000 years ago
3-42, at least according the hitchiker's guide to the galaxy
4-To achieve greater and greater things until we are at a state of perfect equilibrium where nothing can be done to improve anything and nithing can be done to hurt it.
5-To die. Each individual human's ultimate destiny is to die.
6-To love/do good. To make someone else's life better or easier.
7-We can't know, there's just no way of knowing