Why use a Crossbow?

So lately i've been seeing a few old guys complaining about not being able to draw their bows anymore on another forum.
I quit archery and slinging when i was 23, had back problems since i can remember, just standing around for a while makes me feel like im getting stabbed behind my shoulders, drawing even a 25# bow makes my shoulders crack.
Im pretty buff, i workout every day, have a strick diet of eggs, salmon, fresh meat, liver vitamins(for the test boosters), oatmeal, vegetables, test-boosters and protein shakes, but no matter what i did, how i stand, warm up, etc.., i couldn't seem to get rid of the pain, so i though rather than risking even more problems when i got older, i should just switch to crossbows, and i haven't looked back since.
I love the accuracy, power, the fact that you can make your ammo very easily and the low complexity when compared to compounds or rifles(tho im really into matchlocks right now) while they are just as accurate at close range.
I think they are the perfect survival weapon and weirdly enough i can cock a 150 pound xbow all day no problem whatsoever, tho i prefer to use a pulley, plus i've always though they looked very cool and unique.
This are just some of the reasons i like crossbows , would someone else share your reason for using a crossbow?.

My crossbow scratches a certain itch that neither my bow or rifle really can get at, the comfort and ease of operation of a firearm combined with the satisfying results of a stout bolt walloping into a target. There's also the added bonus of low noise, which for me is important, since I shoot in a patch of woods only a few acres large.

Sorry to hear about your back problems. I hear that a lot from long time archers, having to lay down the bow and switch over to crossbows. I'm just thankful there is an alternative (to bows) and it's easy and cheap to get into.