I skipped 8 and see no reason why I’ll ever want to adopt 9.Windows XP served me well until a few years ago and 7 has been serving me well since.
the whole idea that anytime a new o/s version gets released you just have to get it, when the current o/s is working fine for most people, is ridiculous. it’s not necesary for most people to have to get the latest just b/c the latest, exists.