Self Service
Self Service has never really been something I was interested in. In my second last year of high school, back in the 70's, they offered a course in basic mechanics for girls. My school was old fashioned, and didn't let the girls take shop classes. As all my friends were taking the course, I took it too. I actually learned a great deal. If absolutely necessary, I could change the oil, rotate the tires, etc.
Then in my first year of university, my father re-married, and my eldest step-brother, turned out to be a mechanic. So from that time on, I've let him service my cars. He is retired now, but he still likes to work on all our cars.