Well, MAC's really don't suck. They are really fast. You just can't compare them with windows based systems.
There are plenty of programs for it and it is the best in its genre.
Ofcourse it's not for games, but for photo and video editing they are the absolute best.
I don't own one myself, because I have no use for them, but in my opinion the certainly don't'suck, they are just different, and that's not the same thing!