I always used to used Macs, but then I switched over to a PC when I began my post-graduate work - the main reason being that I needed to be able to print things, and the whole computer set up here is on PC.
My parents used to have a Mac, but have just switched over to a PC, because they could never read email attachments and the like. Hmmm, not very encouraging for someone who wants to switch the other way.
If it's because you're fed up with Microsoft, why not try running a PC on Linux? Apparently, it's far superior, but you really have to know what you're doing.
Best of luck,
Hild