Milk

I think I heard somewhere that as we get older, most people become more lactose intolerant. I recognize that this may be true because while mammals drink their mother's milk for a certain amount of time as youngsters, humans are the only weird ones who sometimes don't breastfeed their babies and give them formula instead, and we consume milk from other mammals way more than our own. Isn't that kind of weird? Those lacto-orvo vegetarians or whatever they're called may be onto something. I'm not a big fan of eggs, either.