Mainly those are skills that take time to master, and we live in an age of specialization where we make a living by doing specific things well and getting paid by people who do things we don’t do. I’ve learned a few skills related to home maintenance and remodeling because I found them interesting. Years ago I rebuilt the engine in my old VW bus. That was enough car mechanic work for me in this lifetime. Just my thing. I’m also not interested in raising and butchering animals, and I find vegetable gardening tedious. Just a different point of view I guess. I don’t see any ethical problems with paying somebody else to prepare my meat, or put out fires, or arrest burglars, replace roofing, etc.