Actually, the numb hand thing is the proximate cause of me getting a recumbent. I make my living with my hands, and just couldn't/can't afford to have numb hands after every bike ride.

I also sleep in a wrist brace, took the arm rests off the office chair 'cause it was hitting the ulnar nerve, and wear an elbow pad whenever I think my elbow is going to be resting on something.

Take care of your hands. You neve know when you'll need them.