I'm going to come back to what I bolded in a minute or two. At one time, I had over 50 tubes in my system and there were days I felt like every single one of them was working me. I'm not going to regale everyone with my little shop of tube horrors, but suffice to say I ended up getting "mad" at tubes and decided to sell off all of my tube gear except for my Ampex 350s which have never given me a moment of trouble (knock on wood). Part of my issue at the time was using a LOMC cartridge with a Counterpoint SA-2 pre-preamp into a heavily modified Counterpoint SA-5.1 preamp (by the designer-Mike Elliott). You just can't have a pure tube phono signal path and a LOMC cartridge (<.3mv) and expect anything approaching really low noise.
I decided to go SS and see how low I could drive my noise floor and I can tell you I got my noise floor really, really low. And yes, it's addicting. You can hear all the different layers of the noise floor as they peel away at the end of a song and it fades into blackness. This was the first time in my audiophile life that I had a phono section, preamp, and power amp from the same company (Krell). I had always been a mix and match kind of guy previously. I no longer think it's a great idea to mix and match preamps and power amps.
So all the while that I was enjoying my SS gear and the super-low noise floor, I kept thinking that something was missing and the sound is so 'clean' that it actually becomes boring. And not because it's missing noise, just because it seems to be a little bleached out harmonically and you are missing info that simply isn't there anymore or there in the correct proportions that you are used to hearing it. But all the while, you are enjoying your black backgrounds and lack of noise. I'm pretty sure that during this time that I sent an email to Myles and told him my system was so clean and yet it was boring me.
Along came the Raven Silhouette tube monoblock amps for review and I quickly realized I couldn't live without tubes anymore. So back to Mike's statement that Quality tube line stages with good tubes should be damn quiet. Quality tube power amps shouldn't make a damn sound when music isn't playing. My ARC Ref 5SE and Ref 75 are stone quiet. Tube phono stages are never going to be as quiet as a SS phono stage. The flip side of that is that a SS phono stage is probably not going to have the harmonic complexity of a tube phono section and have quite the body and tonal density of a really good tube phono section. And having said that, I strongly prefer having a tube phono preamp that uses JFETs to drive the tube input stage in order to reduce the noise (some prefer SUTs).
Unless you just hate tube gear for whatever reason you hate tube gear (ignorance, never had them in your system, you only had tube cheap gear from your grandma, etc.), it's hard to give up their magic when you switch over to SS. You might be happy for awhile (I was), but once you realize you are bored and it finally dawns on you that you are bored because something is missing, you will be called back.