Alright, that title might be a bit exaggerated. Flame wars are bad for the community, and I don’t condone them. I think differences of opinion can be expressed in respectful ways that don’t involve unrelated personal attacks. I guess what I really mean to say here is that you can benefit from “heated discussions” that sometimes escalate into flame wars.
But nearly every super-heated discussion (whether in the web design community or elsewhere) has a common denominator: Two opposing sides with valid points of view. It’s unfortunate that sometimes these discussions turn a bit ugly and the actual pros and cons being discussed can go somewhat unnoticed and often forgotten.