There are many great things about Apple macs. Mine is 5 years old and would still be going strong if I hadn't stood on the screen, it rarely crashed. There are also things that are massively rubbish about it, such as photo handling, finder and spotlight. Same goes for Windows, good and bad.
I just don't have £1000 or more to spend on a computer system I don't really earn money from. I'd like something that will look after me for the next few years and a good DAW that I can afford. Hence the PC idea.
One is not "better" than the other. It's what works for any given individual. And I'm equally fine with using either OS, although I am used to Logic.