It costs what, like $20-30 to get an oil change most places? Sooo not worth it to change my own in the cars at that price, I suppose if I had a rare vehicle I'd do it myself.
Bikes are a different story, the shops want $70 or so to do it
Actually dealers are now charging up to $45. Even so.
You go to the dealership and an hour later your oil is changed.
OR
You jack up your car and unscrew the oil plug. (5 minutes) Have a beer while you wait for it to drain.
Remove oil filter and replace oil filter. Screw in new oil plug. Have another beer.
Pour new oil in. Have another beer.
30 minutes later, you are at home instead of having to drive to the dealership, and you got to drink beer.