Using the same Arch Linux installation for a decade
My home laptop Arch installation is about 8 years old. The only major breakage I've experienced with Arch and Debian in the last 10 years or so has been the switch to systemd, which is understandable. I don't necessarily recommend for everybody to run Linux/Unix on desktop – especially if you need specific hardware or software support – but it's definitely not less stable than Windows or OSX from what I gather observing those around me running other operating systems. To me, the fact that I can likely fix things myself is worth any extra trouble of choosing the less beaten path.