OS display a good flavour of life.. good things come both ways.. free and paid.

Helping for instance... even though I know i can earn loads by helping friends and people out with their PC probs, I don't charge them a buck! Similarly, I don't crib about helping out..

what about you?

Mac: Pay me... that's about it! I'll do beautiful work, but pay me!

Windows: Need to be paid before and after (also sometimes during) work. Issues but very friendly and stable work! ... etc...

Linux: I am here to help you out! learning is the only thing I need!

Others like Solaris, OpenBSD: a little flavour of everything!