[gwd]

I mean, the most important part of a role-playing game like D&D is... the role-playing. You're basically telling a shared story, with each player controlling one character, and the DM controlling everyone else. The fighting mechanics are sort of a mini-game inside the larger game.

If that's all you want, there are loads of combat games with miniatures. I've never played Warhammer, but that's obviously the biggest one; I've enjoyed the Star Wars X-wing combat game as well.