Stupid question of the day: Should I leave Amp on?

I speak for all the experts when I say: "If it's not tubes or solid-state with class-A bias, leave it turned on".
Class-A solid-state uses too much electricity to leave powered up 24/7.
Now some experts say that it's O. K. to leave a tube preamp powered all the time. To me it's a waste of tubes.
Regards, Ken

I agree with Ken, I am scared that my power switches may not work- I only used them once when I got the amps! Though in a few months I will need to turn them off to swap out an interconnect and power cords- I better start preping myself for this :o)

My amp encourages me to leave it on, the power switch is on the back.

Here's a wrinkle - my amp is in "standby" until it's switched to full power. Is standby the same as full power?

Ideally, standby leaves the primary gain stage(s) powered up so your capacitors stay nice and juicy and ready to go.
The final, power consuming stage is switched off.