Tube amp powered up?

I'm in the habit of leaving all my SS components powered up all the time, as advised by the first dealer I knew, back in the 80s. Now, I have a tube integrated (jolida 302b,and a vintage tube receiver. Some say leave the tubes on all the time, because what hurts them is the surge when they're turned on. Makes sense to me, but all the dealers, gurus, soothsayers and technicians advise bringing the tubes down when not listening. Anybody have an opinion?
FF