Alot of us are born into christianity, so were forced to go to church and even forced to participate which as get older makes us want to rebel against it. which usually happens in the teens into college. and college is where we are told by the media and society experimentation is supposed to happen so we do. Most of us eventually choose to return to God but it takes us seeing that the secular world is a literally a living waste land. I know this from experience, it starts off fun but doesnt last.