I can't speak for anyone else, but as a Web developer, I hate Microsoft because of their current and recent handling of Internet Explorer - specifically that it doesn't auto-update.

I love my job, but in my job, Internet Explorer 8-9 is pain. It's why we can't have nice things. I checked out a Windows Phone in a store once, and thought it was pretty sweet until I saw the IE logo and physically recoiled. There was no way I was going to own something where I'd have to hit that logo every day to browse the Internet.

That's not ancient history, that's present-day reality.