What would our world be like if we ceased to worry about 'right' and 'wrong,' or 'good' and 'evil,' and simply acted so as to maximize well-being, our own and that of others? Would we lose anything important?
It's not so much religion per se, it's false certainty that worries me, and religion just has more than its fair share of false certainty or dogmatism. I'm really concerned when I see people pretending to know things they clearly cannot know.
The fact that my continuous and public rejection of Christianity does not worry me in the least should suggest to you just how inadequate I think your reasons for being a Christian are.