When I was a child, lighting struck my home and basically destroyed everything plugged in. I didn’t know any better and was confused as to why my mom thought it was a wonderful thing.
Unless you have a very detailed insurance policy, if you were to have that happen today.. in my case, with custom/rare non replaceable components I don’t take that risk and unplug my system when not in use.
Warm up and sound quality do not seem to be an issue and in a few hours, everything is stable and sounds just fine.
I’ve also had a preamp power supply blow up while listening to music. Thankfully I was there when it happened so there is something to be said about leaving equipment powered and not there for these situations…