For me, the reason I don't do the maintenance of my own bike is largely to do with not having the tools or room for it. I'm sure that I could, like Jinx, patch a tire if I was so inclined to do it and had a patching kit like when I was younger, but largely I just can't be arsed. I can just ask someone to do it for me in exchange for a small sum of money after all.
It's also something that's known to be substantially more common in the younger generations than in the older generations, with the major change being the Millenial generation.
It's also something that's known to be substantially more common in the younger generations than in the older generations, with the major change being the Millenial generation.