I've done my own oil changes a few times in the past, but I don't bother anymore, and just have a mechanic deal with it. They're faster at it than I am, and I don't have to drive out somewhere special to dispose of the old oil. It ends up being cheaper to have someone else do it, too. I also don't drive all that much, so I don't have to worry about timeliness here; I can just have them do the oil change when I bring the car in for some other servicing.

I get that you want to do it yourself, and that you've made different value judgments over the various aspects of doing it yourself vs. having someone else do it. But understand that others of us have also made different value judgments, and our situations aren't always the same.