I've got several units intended to be always-on "unless leaving for an extended period, such as along business trip or vacation" (that was taken from the preamp manual). No power switches, at all. They happen to be vintage SS units including a tube DAC that keeps the tubes in a standby "preheated" state, but I think lots of new gear is also always-on. Anyway, I recently got a power conditioner with a master switch and soft start functionality so it's easy to turn this stuff on and off. These days I'm typically at home about half the time, kind of 4 days at home, 4 days away.
More specifically, the preamp and its power supply run at about 88F in a 70F room. DAC runs at 83F in standby mode. for comparison the phono prepreamp runs at just 73F. Does it make sense to turn everything off when gone for a few days? Pros/cons? Does the power cycling do anything to materially stress components or shorten life? Comments welcome and cheers,
One thing to consider is electricity bill. On the other hand, electronic gear typically fail on turning on or turning off (power surge, inrush current, something like this). And in vacuum tubes there is the "cathode poisoning" phenomenon. You have to cosider the pros and cons.