The values put forward in the New Testament (well, the Gospels) are a pretty good basis for ethical behaviour, in my opinion. Most of the Old Testament is pretty frightening reading, hard to live by and you'd wonder why you'd want to. As for the preaching on buses... I'm a bit torn. I can see why if you genuinely believe that a person can only have their soul saved by becoming a Christian (or whatever your religious flavour is) then you have a very strong moral imperative to preach. Christians are basically supposed to be evangelical for that reason, although it makes me a bit uncomfortable. For me, it's about manners and intelligence. If someone stood up on a bus and was charming and articulate, then it would make my ride more interesting. I can see that it would annoy other people, though. There's absolutely no excuse for haranguing, lecturing, patronising, threatening, or tediously droning on for Jesus. And anyone who disagrees with me will get a jolly good smack and a finger-wagging, so there.