I love the sound of tubes, I do. I adore it. But tubes gotta go for some very important reasons. Who knows how long the NOS supply is going to last and who can afford it.
Don't sell your tube amps
Although this was an article in a guitar Magazine, I thought it might interest those who own stereo tube equipment:
https://www.premierguitar.com/gear/amps/dont-sell-your-tube-amps