Do you leave your components on 24/7?

I experimented with my modest SS system, left it on for couple of days and in another case didn't leave anything on.
Well, it didn't really sound good cold. However, there was no or little difference in sound between being on for two days and being on for two/three hours. So I usually keep it on on weekends and turn it on on weekdays in the evening.
Another point might be that you don't want your equipment to be on and even plugged in when there is a storm. And one can never predict the weather.

Many of you are so ecologically bad; it's beyond words. You can buy electricity but you won't need it in hell. Keep it on all the time.

The day of reckoning is coming. I warned you and don't pretend that you are not afraid. You are.