It also used to be very common for people to turn off their computers when they were done using them.

Yup. Those were power-hungry times, without deep sleep modes, or even useful hibernation. Heck, most machines then didn't even bother to reduce clock speed when idle.

"It is now safe to turn off this computer"

I remember when I saw my first ATX computer, and it turned itself off. That was cool.

The CPUs used hardly any power so there wasn't much point throttling them. The rest of the computer and the CRT used loads though.

Linux wasn't so great in 1995 either. We regularly rebooted for various kernel, ip stack, etc, bugs that would crop up after a fairly short amount of uptime.

Our Sun workstations were very stable though.

I must have had great luck. My sister and I had an HP Win95 machine for gaming growing up. It never crashed. But it also never got weird software etc.