I don't have a religion, and believe in evolution.
Yes, maybe all those other religions DO preach the right things.
But I think that children should be allowed to develop their own thoughts and ways and choose their own religion. Religion most likely developed because some random guy wanted to create something so that he could look forward to doing something each day. Smaller children should probably have a choice in deciding what they would want to believe in - maybe for the rest of their lives.