I don't shave my chest hair, but i do shave the hair off my back. I started doing this because of my job, which required me to work in tall brush, weeds, etc. ticks get on you and you see the front of you, right? well, you can't see your back, and if you are sweating, I can't tell the difference between sweat running down my back and a tick. with my back shaved the sweat runs down my back quickly, if I feel anything else it's a tick. My wife actually shaves my back, cause I can't reach all of it. I didn't have a hairy back until my late 40's. My wife says she doesn't mind the hair, but has told me she likes it smooth. she places her hands on my back when I'm fucking her, and sometimes she gets turned on while shaving me, so we both get a little trim.