I do if I can... some guns just don't like it. I have an M&P 9C that has a 12 round magazine so theoretically its a 12 +1 gun. The problem is that to seat a fully charged magazine under the closed slide is damned near impossible. You have to stand the gun up on a solid surface and lean down on top of it with considerable force to seat a fully loaded magazine. I'm not doing that. A magazine with 11 rounds seats smooth as butter. Add one extra round and its a gorilla gripping and hand slamming exercise. Does that with all four of the mags I have for that pistol. I don't fight it, 12 it is. My Glock 20 isn't quite as bad but it requires more force than I like to charge it 15 + 1. I don't fight it, 15 rounds of full house 10mm is plenty. Other guns that don't suffer the problem get fed to the limit.

Every normal man must be tempted, at times, to spit on his hands, hoist the black flag, and begin slitting throats.