Right out of high school I got a job as a mechanic, something I loved doing as a hobby before and got real good at. It’s the customer, it’s like doing family IT work. “You changed my oil 4 months ago and now one of my headlights won’t work”. Between that sending out vehicles that declined a bunch of work. I swear we only held one plumbers van because it was so unsafe.
I still love working on my own cars. However I’ve refused to touch any family members or friends vehicles. Not worth it.