Here's my rundown

Mac
  • You look cool (at least until this trend stays alive).
  • Apple is a very good hardware company
  • The Mac has a sweeet program packaging system
  • It costs a lot more money (SolSyke, not everybody lives in kingly luxury like you do )
  • You're screwing yourself compatibility-wise by using (and buying programs for) OSX
  • You may just develop an obsession like other Mac and Linux users
PC
  • More bang for your buck (why try and convince yourself that it's just as fast as 3.0ghz when you can actually have 3.0ghz?)
  • You don't have to worry about "ugh, it's Windows-only" (people actually develop for Windows)
  • Windows Vista is astronomically more stable than previous Windows versions, (perhaps even moreso than Mac or Linux, we'll have to see). (I'm currently sitting on 38 days uptime - and yes, I'm actually using my computer)
  • You get wonderful spyware and viruses if you're too careless on the internet
  • Like in the case of SolSyke's toshiba, the manufacturer you buy from might be really crappy
Linux
  • ...Uhh.. well, you always have the possibility of recompiling your kernel <strike>if</strike> when something goes wrong&#33;

EDIT: I took out the "a bit more stable" entry under Mac because I just don&#39;t know&#33;