I don't. Every Mac user I know doesn't. Maybe I'm a weird demographic (I switched back in 2000 - prior to that, I used Windows strictly - from DOS/3.1 up to 2000!)

I've found that any Windows software I need (i.e, some software to capture a stream or a uTorrent-equivalent client before uTorrent was available...), there's an equivalent version on the Mac.

I do still use a Windows machine (and have worked on a Windows machine from XP, Vista and currently Win 7 Enterprise) - but personally, I have no need for it. Although, honestly, I find Windows 7 quite nice.

I have a VM solely for web dev (IE testing.) However, of all my friends and family who own Macs (sample size of about 10) one uses a linux vm for dev, and one more uses Crossover for gaming (WINE, basically). The rest have no virtualization/dual-boot whatsoever.

I think you're very wrong if you assume that most Mac users also run Windows.

Anecdotally, the only Mac users I know who run a VM at all do so for IE testing, or occasionally for some other UNIX variant. Then again, i don't know many people who are super hardcore gamers.

I don't, but I have 3 computers