People don't like loud volume like they used to.
I have a Marshall 100 watt Plexi full stack that's just thunderous. I can't use it. And I really don't want to sell it. It's just cool to have.
And Marshalls are like Ferraris. You gotta run 'em flat out. Marshalls sound like crap turned down. You got to get those tubes nice and hot for that good saturation.
Marshall has knocked it out of the ballpark lately with their "Classic" series of British-made 20 watt tube amps which are plenty loud for today's needs. They also have built-in attenuators to run them at only 5 or even a half watt for bedroom use.
The days of running two or three 100 watt Marshalls on stage and dimed out are, sadly, a relic of a bygone era.
These refrigerator-sized, over-engineered British electric guitar amplifiers have been an icon of rock music for the past near 60 years, but unless you've stood in front of one, people just have no idea how unfathomably loud they are. They rattle every fiber of your body.
It's glorious to experience.
I get it about the coolness of having. Oh yes, the best amps of that era sounded sooo good but mainly when cranked. The 360 could produce deadly low end with definition, but was solid state. I now use an Orange Terror head into a single 12 no tweet Orange Cab, warm tubes and a fretless are a great combination. I have other stuff that will get louder but these days that’s usually an outdoor gig. For just “neat to have” I’ve got a ‘67 Ampeg B15, got it in ‘73.