I don't play out too often, but on guitar tends to stay in its bag ready for the next one. I have set the drums up again at home. It doesn't take too long. With my previous setup I had to pinch various bits from my electronic kit and needed a checklist as I managed to forget some for rehearsals. Messing around with cables each time can be tricky.
I wouldn't want to be playing gigs every week, but a few each year would be fine.
I've bought the same cables or adapters more times than I care to count because I misplaced them between tear downs and setups. Occasionally, a duplicate cable or adapter pops up.
Well you need spares if doing gigs. I have ordered a pack of cymbal fixings as I am bound to lose some of those. There are small things that can mess you up if they go missing.