I've used PCs from the beginning - started with IBM XTs running MS-DOS and PC-DOS - did toy with an Apple IIe in the beginning too, but like most people, got caught up with the whole PC/Microsoft movement.
It's only last year that I've started using my friends iBook, to edit movies, and it's the whole interface - the speed, the elegance, the stability, the lack of viruses and spyware - it all adds up.