I was on a more or less fully plant-based diet for some 15 years (as an adult, mind you) purely due to animal rights, environmental reasons, and other ethical considerations. So, yeah, I was a vegan through and through.
With Covid and some other things going down the toilet (including my loved one's first bout of cancer, my father dying a long death in isolation during Covid, etc.) I just kind of relapsed because **** it, the world was not fair so why should I pretend.
First it was just fish and seafood, and select seasonal game, then... the rest followed as the dam had been broken. So, I switched to eating meat and fish in a major way (still no dairy though) and as a result have gained some 25 kilos or so of overweight during the last four or so years. So... yeah. Well, I have been known to enjoy adult beverages on occasion, and living the healthy lifestyle of a sedentary office worker who rarely breaks a sweat so that has contributed to that also.
I am currently looking at getting back to a more plant-based diet with occasional game and fish/seafood in the mix for health reasons. This would include cutting down on the calories from food and alcohol, and also, actually moving my ass to break a sweat more regularly.
So, I am looking at diving even deeper into the world of Mediterranean, Japanese, Thai, Malaysian, etc. cuisines, plenty of most excellent plant-based dishes and fare there, expanded a great deal if you don't mind things like dashi or fish sauces (too old to be too militant about things now that 50 is creeping closer, but also, due to that, I do need to start taking my health more seriously).
Will be better for me, and for the planet also.