I've not read everyone's comments on this, so sorry if I say something someone else has said. This is how I see it. I've had lots of questions and doubts about things and trying to make sense of it all. I still believe in God and still believe in Christ but the idea that God has written a book full of laws that have no use, can be interpreted so many different ways that it's impossible for anyone to see it the same way and expect by some miracle that only a few will get it right, is absurd.
The laws God set out for mankind were to show that they couldn't, no matter how hard they tried, keep them all. When Christ came he gave us new laws, in fact only two. To love God and to love our neighbour. That's it. Salvation isn't dependent on understanding every tiny doctrine in the bible, it's not putting faith in any religion, church or organisation. It's simply putting faith in Christ. That's it.
If you still want to believe in God, I would suggest you read some books by a christian writer called Philip Yancey. He came out of a legalistic religion and became agnostic for a while before regaining his faith in God. He makes some really good arguements.
If not, there are plenty of others on here that can make a case for atheism.