Always told myself as a youngster I would never pay someone to change my oil. But as disposal of oil became a bigger issue as well as the oil filter, and most of the time I can get an oil change done for about same price as oil & filter will costs me, I have broken down. When I moved into an apartment for a period of time to go back to school as an old man, I decided to start paying for oil changes.
Issues I have seen are shops trying to convince me to do other work - last time I took my Wrangler to a NTB shop, they told me I needed a front brake job at some outlandish costs. Said no thanks, went and bought pads, and discovered I probably had 20K left on the pads on the Wrangler - changed them anyway since I already had it tore down and was already dirty. Later discovered they had forgotten to put the oil filler plug back in the engine, had to spend $10 on a replacement. Daughter had much worse luck with NTB, so they lost not only my oil change business, but tires on two Wranglers as well. I am sure it has not hurt their bottom line.
With three daughters, I did not get to teach a lot of auto mechanics to them. However, one of the rules I had for them to get their driver's license, and for wife to go out of town, they had to know how to change a flat tire. Middle daughter took it a step further, and had me teach her an oil change as well - after her first one on a Ford Escort, she decided she would pay for them. Also taught wife how to use jumper cables - doubt she remembers at this point. But if I had to explain over the phone to her, I think she could follow the instructions.
I have had less issues with dealer oil changes, though they try to sell you unneeded services a lot as well. Uninformed consumers, especially single women, seem to be hot targets for the upsells.
2015 Canyon SLT, Copper Red, 2WD, CC, SB, V6, Tow, blk leather, factory spray liner, safety pkg, generic roll up bed cover.