DQ is all part of Aikido. Proper fighting is virtually impossible - you're too close together and when you combine the turnframes & gravity non-grappling moves aren't a valid way of fighting.

I see no problem in DQing someone to win. If they're stupid enough to try & kick then they deserve to land on their ass when you sweep their leg. A lot of the fun is countering what your opponent does, use their weight against them etc.

If people don't like DQ then play without the ring & no DQ, you'll soon see that it's not as fun flapping around on the floor trying to rub-off on the other guy for extra points.