Leave tube amps always on?


Mark, the owner of Linear Tube Audio, suggested I leave my tube amps on all the time 24/7 if im listenting every day, and to turn them off if not using for a period of time, a few days or for example we go away.  His reasoning was that it uses considerable more energy to turn on/off on a regular basis. 

Do others agree?  Kinda risky since these NOS Mullard tubes ain't cheap and will soon be gone forever.   
aj523
This roundtable is entering the "How many angels can dance on the head of a pin" phase.
@hilde45 


Thats what I was thinking. How many electrical engineers with qualified expertise have actually weighed in here other than maybe atmas-sphere. 
@vinylfun

Sorry I dont know Kevin Deal. Is he an engineer ? What audio manufacturer  is he or / work for?

Kevin Deal is the founder/chief of Upscale Audio. Though I am not 100% sure on this, I'm pretty confident he's the guy behind the PrimaLuna brand.
My wife left my Rogue tube amp and pre-amp system on all of the time and it was expensive both in tube replacement and utility expenses. The big amp was like a fireplace! I sold the whole system and replaced it with an Exogal digital power DAC combo and never looked back. The new components sound fantastic, take up very little space, and are cutting edge modern audio design. In my opinion the tube thing is greatly overrated and the tube sound is a likable form of distortion.