My Mac days are way way behind me (
this reprepsents the platform of my most recent experience). I didn't plunge into the windows world right away, though. I have a Pied Piper (CP/M) machine downstairs, along with the Amiga 1000 (both running, well, they were running when I parked them). Eventually, DOS, then Windows.
Windows dominates my computing life now. I'm sure there are other similarly capable platforms available, but I just don't have the bandwidth to spare to get up to speed on them. Windows for work, Windows for home, Windows for recreation. *sigh*
I'm happy to hear about all your other experiences.