Hi. Sorry, Total stranger who happened on the thread. Im 63 (gigging since 15). Unfortunately my spine is calcifying and I can't stand up any more and will lose all bladder and bowel control within the next five years. If its any help i can tell you my basses have gone from two to nine, I've taken to learning all the bass lines I've loved over the years but never played live. A good friend of mine took me to meet Dennis Dunaway (absolutely a brilliant guy, no ego, stunning bassplayer) and it reaffirmed in me what a stunning instrument tha bass guitar is!
Whatever your reasons for hanging up the spurs don't do yourself short. The very fact you opened this thread (imho) shows you aren't ready. Change the parameters, not the instrument.
Very best wishes to you.