Should We Be Turning Our Gear Off Every Night?

Should we be turning off our gear every night, or is it ok to leave it turned on constantly? Any harm to speakers when keeping them on all the time? I generally turn my stuff off once a day and turn it on once a day. If you've got really old, vintage gear, especially tube gear, or something with a lot of chips in it from 19 72 wand those chips are obsolete, you mightwanto leave it on. Some people want to be green, and they want to use the least amount of electricity necessary. It could be argued that buying this gear in the first place is one of the least green things you could possibly do - manufacturing produces tons of toxic chemicals