Mac's are my favorite. I work in the Graphics field, so they have been my standard from the start. We have a PC and have had several over the years, but I still prefer the way the Mac operates. Like others have siad, I rarely have to reboot, never have to manage my disk space....just get on and go.
Oh yeah, when you're on a Mac you just delete all of those dire warnings about viruses. Having had a teen that downloaded everything in sight, and having had to sit on the phone with some tech in India, (or wherever for hours at a time) to rebuild the PC, THIS is very important.