Both their functionings are complex, so people can get impressed. But for both of them, all the complexity is inside the device and there isn’t much to put together; and the way they hook up to your house is really simple.
Why YSK: so you don’t live too long with a broken toilet or garbage disposal, thinking it will be too hard to replace. Those two are some of the simplest things to DIY.
Yeah, I had to replace both my toilets, because they both cracked within 6 months of each other! Part of it is possibly that I’m quite unlucky, but part of it is also probably that they both just very old.
Definitely agreed that if your issue is not as fundamental and is something working weird in the tank for instance, the failing part is most likely easy and cheap to replace in isolation.