"Never had to reboot". Yet every time I start my sparingly used Windows machine the first thing it wants me to do is reboot to install updates, and it's pretty insistent about it.
Not only that, it will reboot when it decides to and you can't do a thing about it. You haven't pressed a button for a while because you're watching a movie? Time to reboot!
I know about "work time", but it can last only 12 hours (IIRC).