I’ve got 4 or 5 M570s, and most of them have had a switch replacement. I’m several kinds of mechanic and several kinds of electronics hobbyist, so I have the tools and skills, soldering a microswitch is child’s play to me.
I fix a lot of stuff, rescued my father’s old coffee pit from tue dumpster. Why chuck a perfectly good machine over a clogged bubble pump? Fixed a random orbital sander by pulling it apart and giving it a good scrub. Hurts my head thinking of all the peefectly goos things people throw away over easy fixes.
I agree, I just factor the cost of my time into the balance of the cost of a fix vs. a replacement. Cleaning doesn’t really count in my opinion, that’s something any device will require. For a $35 thing that lasts a decade and is made of plastic that will have eroded or fatigued significantly over that time anyway, the cost/benefit doesn’t really work it favor of repair, unless like you I enjoy the repair. For most people, the economics of the repair make even less sense.