I mean, good for you.
But for a lot of vegans and vegetarians it IS about animal cruelty or saving the planet. AND THAT’S NOT A BAD THING.
It’s sad that vegans are so hated that you have to write an article saying “veganism isn’t stupid because it’s selfishly good for you”. Even if it wasn’t “unlocking miraculous levels of energy for you” — what’s wrong with being vegan because you care about animals or about climate change?