The main reasons I've seen from vegans for not eating meat seem to be all about the morality of eating a sentient animal, the practices of the modern meat industry, and the environmental impact of it. And don't have anything to do with the taste of meat.
Since lab-grown meat doesn't cause animal suffering, and assuming mass production is environmentally friendly, would you consider going back to eating meat if it were the lab-grown kind?
but people regularly think I’m 10 years younger than I am.
This is the same kind of magical thinking that leads some vegans to believe that they don't produce any body odor, or that they can cure cancer through diet. I eat meat, I'm nearing 50, I'm physically healthy, and regularly mistaken for being in my 30s. The idea that vegan = healthy diet is, well, pretty obviously nonsense, since Oreos are vegan and still terrible for you.