To th OP, why do you need to be convinced to use a different OS? Everyone will tell you that the OS they use is the best and everything else is crap. Why not go with what works for you?
I stick with Windows because I play alot of games on a PC. Any other program I need runs fine on Windows. I personally have nothing against macs or linux, they just can't do what I want them to so I don't use them.
IMO, there is no definitive answer to the Os debate, all comes down to personal preference.