Dude, you're 42 — you're just getting started and the best is yet to come! Happy for you on your sobriety experiment but I'm just going to throw this in here as a suggestion (which feel free to reject out of hand if you know it won't work for you) — since alcohol gave you pleasure and you're not an alcoholic, why not just really commit to drinking less. Two beers a night, or a G&T and a glass of wine, or whatever.