Well, he says it better than I could have - here's a quote from a new article on our site profiling a real interesting fellow, Fishel Bresler.
"One day I had a shocking realization; my concept of Judaism was that of a thirteen-year-old's, the age when my Jewish education ended. No one would tell an astrophysicist, 'I know all about it! I studied stars in sixth grade.' But most intelligent adults assume they know all about Judaism, even though they formed their opinions with a childish comprehension!"
Sometimes, I wish I had the courage to say that to some people after they've given me their reasoning as to why they don't believe this or don't do that...
Read the whole article here.