Maybe windows sucks for you - but everyone else has their own opionion. Windows sucks for me too, btw. Due to the install base of windows - I'm sure there are more happy windows users than total OSX installations! OSX isn't suited to everyone for whatever reason - just like Windows or any other piece of software that has ever been created.
Driver issues are a relative small problem - but I'm sure that you'll post some antidocial reasons why this is not the case.
I don't really see how Mac OS, and even Windows in a way, can be "not suited" for something. It's just that Windows is overall unstable, and upgrades are a ripoff. The reason for the huge market share is that
1. If you buy a new Mac, you are forced to buy high specs, so it is too expensive.
2. People don't know that you can just buy an old Mac for the price of a Dell or HP or Acer.
3. Apple sucked until the late 90s.
4. People don't want to switch back because it's hard for them to get used to the OS.
5. Apple computers look less professional because they are so sleek and easy to use.