Seriously. Windows 7 was the first genuinely stable OS from Microsoft.
Everything before it required regular reformating. Granted, the frequency of the reformating less over time, but still required it. Like, Win95/98 required it like every 3 months, XP every 6 months to a year, just to avoid the bloat and slowing down and issues. Same with reboots, it didnt have to be rebooted every time you ran a program, either.
Windows 7? My longest run between formats was like 4-5 years iirc, and that was due to hardware changes, not due to any performance or maintenance need. Ans for reboots? Only time that computer ever got rebooted is when a windows update demanded it, or when the power went out. Neither of which was particularly frequent.
It was also slick, agile, easy to use. You didnt have to think about shit when you used windows 7, you just did shit.
I’m not a fanboy, despite what this sounds like, but 7 was legitimately the best Windows OS, hell it wouldnt take much twisting for me to say it was the best Desktop OS, period. It was the first time ever that I was able to use the computer, and not have to stop and think “Well, I just finished running a heavy game, I need to reboot before I do something else” I just stopped one heavy task, gave the background processes a second to finish up, then went right to another heavy task without issue or concern.
It also had a very good UI. But Windows always had the best UI, by comparison, in the market, cause they spent billions on developing it so that the most computer illiterate could pick it up and use it with 15 minutes of instruction.