And just to elaborate a bit on Gene's statement, I've been playing for over 55 years and also have never remembered having Quads beat.

I don't remember many hands, but do remember having 5 aces three times. And the one hand I will never forget is the first time I played in a $20-$40 jacks or better draw game at the Horseshoe Club (Gardena) and having my aces full beat by 4 nines in the very first hand I sat down on. Needless to say I got up, left and never played that game again in that club.