I could agree with you one year ago. But after latest upgrade to macOS I got so many issues on my MacBook Air and MacBook Pro that I decided 'enough is enough' :)
Am I the only one who's never had any issues? 7 years so far. Just replaced my latest one because work got me one. They both run great, except the older one has some fan issues but never anything that prevented me from using it.
But then again I rarely install new things, only have a few base programs I run routinely, and reformat regularly.
I've just had a ton of issues with the mouse becoming unresponsive... and then having to do a restart, whereas on El Capitan and Yosemite I could basically leave my computer on for forever.
No, I still have not installed Sierra on either. I don't want any siri bullshit. I wonder how long it'll last before I'm somehow forced to upgrade to Sierra. I'm willing to bet it'll be fully baked into the next OS release.