Def 7, it was the first OS used at work that turned invisible… It didn’t need constant defragging, optimizing or registry hacks like 98, 2000 or XP used to. It was a workhorse.
That said, I haven’t used 11 yet. My company just announced that this year all PCs will stay on 10 for the foreseeable future.
Born in the late 70s, I only recall being bored when my parents made me go to mass, or waiting while they did adult stuff like going to the bank.
Horsing around with my brother or playing with the Casio stopwatch kept us sane.
At home it was TV, Legos, music and bikes