The rapid pace of Rails is a turn-off to me, and I do bounce between it and the more "sane" Django.

But I think that's more a reflection of myself (being an "old" guy who's "been there, done that" several times over and resistant to change and trends) and not the fault of Rails. So I try to keep up.

But Rails is good for the web. The web was pretty stagnant at one time, and it sucked, and didn't keep up with the needs of users and businesses.

And that's why I don't have a real problem with Rails' rapid pace. It keeps everyone on their toes, including their competitors.