Not all Jews are stuck in doctrine and ritual, in particular the Karaite Jews aren't. Orthodox Judaism has more doctrine and ritual than I would like, but I will put up with that for the other benefits. I understand why Jesus complained about the Pharisees, but I honestly don't understand what problem he had with the Sadducees.
I think it is a good idea for everyone to read both the Old Testament and the New Testament before reaching any conclusions about religion.