Not listening to female singers because that arouses... That's pretty extreme. :p So is not allowing a woman to dress beautifully, although I personally wish more women in the States at least would dress more modestly.
There are certain moral truths that I believe should be upheld by all people whether they're of a specific faith or not, but pushing certain beliefs on others such as the issue with the segregated buses strikes me as something that really ought not to be done. That is, for people who aren't of that faith: why should they be expected to live by and adhere to that?
For religious people, though, limiting oneself is an essential part to just about any religion. You choose not to do things because they're either immoral or do not lift up others. Christianity is much about self-restraint, of limiting oneself, choosing not to do certain things which are spelled out as sins or which whether sins or not may be a stumbling block to those who may see them as such, and thus abstaining from those things. It's living for God over pursuing what we naturally want, because as Christian doctrine teaches, we are all born in sin, wicked by default, and will have many sinful desires. But, like I said, with the exception of specific moral truths that everyone ought to adhere to (not committing murder is an obvious one), godly lifestyles shouldn't be expected of those who are not believers, and forcing them to live according to ideals they don't personally hold really does nothing good.
As for discussing religion... Hey, other people were doing it first, so I jumped in. :p