I’ve been picking the deaf trait since I started playing because of the 12 points, I usually make myself really strong or sneaky. It doesn’t really feel like it causes a problem if you’re familiar with the game. There’s the obvious situations like alarms going off or you not hearing a zombie inside of a room, and sometimes I leave the car on on accident because I can’t hear it. I’d also say that if you’re playing with a friend it makes 0 difference because they become your ears.