Dusty
just me
Just to point out--I've used a Windows PC for at least 5 years without antivirus and have never gotten a virus during that time. The people who are worried about viruses need to learn how to use the internet.
And still, a main reason I won't ever switch to Mac is because 3ds Max is Windows only, so there's really no point. Although I'd expect at some time I'll get a Mac just to have one. But luckily I'm going into video game development where Macs are sparse so it's not a big issue.
Actually, at my friend's (former) game company, all the artists used Macs for their rendering. You do know that the current Intel Macs also run Windows as well, with Boot Camp? (but it's probably better just to have one of each system, separately, unless you have a crapton of RAM) As with anything in a tech-based industry, it's best to know how to do everything on both systems (and probably Linux as well, for good measure).