I leave my system powered up 24/7 including a tube line stage and a tube rectified outboard SACD player power supply and tubed analog board in the SACD player. I leave mine on for the same reasons as @soix mentioned above.
Does anyone leave their amp and preamp on all the time?
I listen most nights after work. I find that the system takes a while to warm up and sounds it's best if it has been shut off. So I leave it on. I always have and this is vintage stuff. The amp is a 25/25 Bedini class A. It stays warm but never hot. It has never caused an issue but recently I've been speaking with others that were stunned that I would do this. So let me know if I'm the only one that lets it run. Do you shut off the equipment after each session?