You don't need psychological help
there are many of us that worry about the same thing, it just comes with the territory. If you didn't worry about a high dollar car you wouldn't be human,,,,or you just have so much money you don't care, lol
Quality is different to different people. I've been approached to do the same sort of thing, people wanting to cut corners and save money. The issue with that path with many shops is they really don't want their name on anything less than a show quality job. Doesn't look good for them to have a "so-so" paint job on something with the owner telling enquiring minds who painted the car. Not necessarily good for business.
I pain over the same things you're worried about. I have cars I rarely drive because of it but I also keep cars in a certain state of disrepair so I can enjoy the heck out of them without worry. My Z is a perfect example. I have no interest in painting the car right now nor am I going to install the new interior I have sitting here. My wife is going to drive it daily to work and on the weekends it will serve as our family car to run errands. That's why it's staying in primer, no worries about rock chips and door dings. I'll still take it to cruises, it will still grab more than enough attention, it doesn't have to be shiny for me or my wife to enjoy it, and that's all that matters. Over the years I've kind of gotten sick of the whole cleaning and spit shine process and then worrying about it every where I take it sort of thing.
In a few years when she is tired of it and I know it will spend most of it's time sitting in the garage, then I'll blow it apart and paint it.
Funny, my nomad still sits in the same state it did when I was daily driving it in the 80's, half primer, half original paint, and I had more fun in that car daily driving it than I can ever remember having in anything else. Even back then it grabbed attention looking like it does. Now that I'm getting it back on the road again after almost 30 years, I really have no interest in painting that one either (I will eventually) but I think I'm going to drive it as is and have some fun with it for a while.