I am a gamer, but also a roleplayer. Roleplayers can come up with character concepts that involve friends, paradigms, that work in a troupe, that use magic together, and use strategies and tactics consistent with the character, not just metagame info.
Some people might be wargamer/gamer with no roleplayer, and be hard pressed to make a character, I guess, but they are the sort of players not apt to want to be involved with Mage anyway.
I enjoyed Mage quite a bit. I never got a 3rd dot in any of my magical traits, and really dont get a second in most. I had 1 dot in everything, and while I couldnt blow up worlds, I could see, and know, and foresee everything. Of course I was an Ecstatic, and had half or more of my senses on at all times, also, which was fun both for me and the GM, he got to describe stuff nobody has a right to hear or see =)
I think, if you are looking for fun roleplaying stories, Mage is an outstanding game to do it in. If you are looking for a powergaming romp, I guess it works, but I dont think its the optimal system.