I've been wrenching on and off mainly on my own bikes and friends' bikes for a long time. I also worked in shops in the 80s when no one I knew used a torque wrench. I have no experience with torque wrenches. So I have two questions.

(1) Should I get one? I think it would be useful but I can't say I feel I have to have one.

(2) Which one to get (and why)?

Thanks!