It’s quite funny because when I was around 18 I worked with an older guy (he was around 55) repairing and restoring printers. He was complaining that when a motherboard broke we just switched it out for a new and threw the old one out. He remembered a time when he used to replace the broken component on the motherboard and had it working again instead.
My parents used their Mac SE at least weekly from 1989 until about 2005, and it still works great today (but hasn’t been turned on in a few years).