I've been using Macs for 25 years, at home and work, Unix machines for a bit longer, mainframes occasionally, PCs only when I've absolutely had to.

The Mac wins hands down for everything except games. If you want a general-purpose computer that's easy to maintain, get a Mac. If you want a bang-up-to-date games machine and don't mind spending a large part of your life fighting trojans and viruses, get a PC. Just remember that anyone else who has to do real work on the same box will hate you.