This is inspiring, you might have convinced me to do the same, if only for the sleep part.

One thing that I'd miss is the taste though, I don't drink soda or sugary drinks, and I can't think of a replacement for the taste of good wine, beer or spirits. (there's good dealcoolized beers nowadays but it feels like cheating). Not that I guess one absolutely needs it, but is still part of the culinary experience. It's probably because I never looked though, is there anything non alcoholic that "grown ups" drink?

Second coffee and tea. I'm nearing a year and have enjoyed tasting and learning about origins and processing methods of tea in a similar way one might for do craft beer. Just as fulfilling with less downside.

Also, I wouldn't consider NA beer cheating! For me, the ritual of social drinking was just as important as the taste. Drinking good NA beers with friends is a 95% solution.

You could try fermented drinks like Kefir or Kombucha? Otherwise I quite enjoy sparkling water with some enhancements like lime, or cucumber mint flavour drops

Coffee and tea! Chamomile is nice in the evening, always makes me feel cozy