solid state gear- leave on?

I never leave my Belles SA-30 Class-A poweramp left on 24/7. Non-weekends I turn it on late afternoon or early evenings, and often leave it running till bedtime (sometimes late; I'm a night owl, for as long as it allows). Weekends it can run for even longer stretches, but never into the next morning. I guess the rationale behind the switching on/off instead of leaving it on 24/7 is a combination of trying to diminish the ultimate heat toll on the capacitors in particular, guessing that it weighs more than the possible effect of cycles (not even sure Mr. Belles in his minimalism has incorporated soft-start in this amp); but also the consideration of the power bill comes into play, so to speak. I have sometimes noticed a sonic boost having had the SA-30 powered up 4-5 hours, but usually find it settles after about an hour or so.  

I go with builders like Ralph Karsten.  Electrical current going through capacitors, semiconductors etc. wears them out.  I heard Nelson Pass and Jeff Roland say the same.  They are only good for so much time. There are sonic advantages to leaving your solid state equipment on if you listen every few days, because of warm up time on some low power circuits like solid state phonos and preamps that take little power and forever to come up to speed.  But let;s not kid ourselves into thinking they are not degrading.  Leaving power amps on anything more than standby or on for more than an hour before listening is wasteful and just another reason to make fun of audiophiles. IMHO.  We burn 12% of our gas sitting in parked cars talking on our phones.  I regularly spit at or on those people so............there.......

After reading some of these posts, I think I'm going to start putting my amps into Standby even more often. 

I leave my ss amp on in stand by 24/7 unless i go way for more than 24 hours then its unplugged from the wall. My preamp and disc player are on 24/ 7 with their screens turned off unless i am gone again for more than 24 hours.

I have always left SS amps on 24/7 and they have lasted 20 years or more!

I listen 3 or more hours each day, and do not want to listen to poor sound quality throughout the warmup phase.

YMMV