Most plumbing or electrical work I do will last decades. If I move, the same skills will transfer perfectly to the plumbing and wiring already installed in the new house. The last big innovation in any of that was PEX piping, which takes about five minutes to get completely competent with, and has been around for years already. People who can come out and fix any of that, if I don't feel like dealing with it, can be found anywhere and often work pretty damn cheap (unless you're getting ripped off). Almost all the maintenance is "buy part, replace part", which is fine because (in the scheme of things) most of the parts are very cheap.

Add "smart" devices to any of that, and they're instantly the most finicky and needy part of the whole system.