Kamikaze Midget said:It's not nessecarily about being fair to the PC's, it's about building a consistent world. If magic is rare and powerful, *all* magic should be rare and powerful, not just what the PC's use.
It's not being inconsistent to say that magic-using ability is rare unless you are a creature born with magical abilities. PC races aren't normally born with magic-using abilities (gnome use of 0-level spells and sorcerers being the exception). That doesn't mean the rest of the world can't be. "Low magic" can mean what you're talking about (a magic poor WORLD) or it can mean what I'm talking about (a world where human/demi-human civilization is magic poor). Both are internally consistent.
What if we were talking about the natural ability to fly? Since PC races normally aren't born with wings, does that mean every campaign world should be short of birds and flying insects?