So far I haven't had any spyware except cookies I think, definitly no viruses, frustration yes but all OSes gives me that, unstability? After XP SP2? No.
So well, that's lies, just know what you are doing and it's just fine.
It's still pretty easy to get infected with a virus unless you've got up to date antivirus protection, even if you're being careful.
Of course I think that's mainly because Windows is a bigger target.