If it's giving you more grief than pleasure knock it on the head. I hadn't really enjoyed playing for years before finally knocking it on the head last year.
I play guitar as well but to be honest I'm not getting anything out of that either, so I intend to stop this year.
Like you I do enjoy tinkering with guitars & basses, and do a bit of work on them for other people occasionally. If you enjoy doing that then there's nothing stopping you carrying on with it. I tend to buy guitars, set them up really well, play them for a couple of months & then flog them, then repeat the process.
I enjoy doing that far more than actually playing.
Also, don't listen to what other people say about your playing. If I'd taken any notice of the negative, unsupportive comments of my mother when I was 14 I'd never have gone on to have 20+ years of largely enjoyable musical activity.