Thanks for sharing your journey with me!
IMO, you have to take two things into account:
1) Transformers > tubes.
The quality of the transformers and the topology used are way more important than the tubes. For example, GM70 tubes can make up to 32 watts in class A1, if you use them at 8 watts (or even 16 or 20w), driven with the same tube (or another very robust driver tube), they'll sound different and much more nuanced.
Same with transformers, if you put the GM70 (or 845, 211, any high power tube amp) with custom made transformers of the highest quality (Tribute or Monolith with finement cores or Slagle transformers with silver wire), the sound quality will be much better than any lower power tube (45, 2a3, 300b, etc) cap coupled or using mediocre quality transformers.
2) Digital sources have improved tremendously.
You need to do yourself a favor and listen to the top models from Rockna and Bricasti. Even some studio DACs sound very colorful, like the Burl B2. Good DAC > mediocre analog (and good analog > good DAC).
Of course I want to know more music and listen to older productions of different genres, but that's something acquired with time and with pleasure in the meantime, not a chore. In 10 years I may have a music collection that will justify a good turntable, now I don't have it.
Also, the ne plus ultra turntable setups, even used "vintage" equipment, is extremely expensive. A proper true high end phono stage, custom made for the cartridge, like the Vinylsavor D3A costs like 15k euros on it's most basic form. I'm not saying expensive=good, there's plenty of ridiculously priced mid-fi out there, but the truly good stuff that is a clear cut above is always very expensive.
A used Micro Seiki RX-5000 turntable is around 10k eur (and is not even a top of the line model)...you get the point, there's no reason for me to buy a GOOD analog setup until my music collection justifies it.
I wouldn't spent a single cent on a mid-fi (sound wise, not just price wise) analog setup.
I know that the good analog setups sound better than good digital, but those cost a huge amount of money and I prefer to wait a bit more, now I don't have the need for one.
TL;DR: good analog is better than good digital, but good digital is great. I'll buy an analog setup once I not only have the funds, but can justify one with a broader music collection.
Indeed, digital has improved tremendously, and optimal set-up is important and not easy to achieve. Most digital is sub-optimal, in my view.
I have a digital-only system, but have heard great vinyl in others' systems many, many times over, and I very much enjoy it. However, even with that experience I am not interested in getting a great vinyl set-up which, as you say, is very expensive, and pure analog source material is limited. I am also not convinced anymore that I am missing much by not investing in vinyl. A few years ago, I would have said yes, not so sure at this point. Great digital, well set up, is just so good these days.