Yes, I take responsibility for my own feelings. I know what it's like from the other side too: as a software developer I can't accomodate every user request. It's difficult to tell a customer that I think they are wrong, or that their problem is not important enough in some grand scheme of things. And it is very easy to insult someone without using any expletives.

I'm not saying that a developer should leave bug reports open to avoid any possible offense. But they must be aware that the act of ignoring a perfectly valid issue reported by a passionate user can be demeaning in itself.