That's the only reason I don't bother much with PCs. They get too outmoded too damn quick. Yes, Macs do get outdated, but it takes a far greater amount of time than it does with a PC. Not until the very latest versions of Adobe software have I run into a situation where my four-year-old Mac PowerBook wouldn't run them. They're made for OSX+ only or so I think (it could just be the versions purchased for the office). The versions before that would run on OSX but would open up an OS9 window within OSX to run. So even new software would work on both and conflicts weren't an issue.
I will never touch another Gateway again no matter what. I've had two as office machines and they suck. Right now I'm running an OmniTech in my office. It's nice. Haven't had any problems with it yet. It's running WinXP. My Mac G5 is running OSX.2 Jaguar and I love it.