I don't very often. I think I only keep it around to keep code from being non-portable. The link times on 4.5++ gcc infuriate me.
Also, I run windows XP right now on my "dev machine". Pretty cool huh? (Long story that ends in tragedy. Short version is hardware problems on 4 computers the last few years; but I've still got old faithful here!)
I also have a big-ass Mac something...[ not hooked up; I hate Macs] and a Windows 10 laptop with a bunch of broken keys so it's only good for media.