I believe man seeks God for many reasons. For one it is because it is a lonely world to think we are alone and when we die nothing happens to our souls but we just lay in a cold coffin and fade forever from existence. It gives hope and reason to life. People also need God to provide companionship... I mean religion is like a second family to a lot of people. God brings the world together and when all else fails we can always fall back on God... I mean, I guess it was just meant to be, doesn't work if there is no greater being controlling everything. Still it is a personal opinion as well. Some people just do not think about the world they live in and just follow what their family and friends do. So really God teaches morals, gives hope, provides reason, and can even be an excuse for this sad existence. Humans need something more in most cases. God provides that little extra something.