Some golfers are simply terrified when they end up green side. Anxious wedge play can dismantle a huge drive or great approach and set a round on the rails. One of my good friends that I commonly golf with is this exact person. He overthinks the shot, tightens up and ends up skulling the wedge to the other side of the green. Expectations are too high. He figures now is his opportunity to make up some ground and he needs to put it close to the hole. Before he knows it he is shooting double or worse.
I love playing around the greens. As long as the ball is not in a bunker you can usually get creative with these types of shots, just keep the mechanics simple. I carry 4 wedges and I'll say majority of the shots taken with them are quarter or half strength.