My train of thought hasn’t progressed beyond observing how weird the relationship humans have to milk. I don’t tend to think of what adults should do in general. To each their own. I personally quit liking milk as a young child. I think self weaning should be encouraged. Instead of the milk campaigns of the 90’s early 2000’s. Whenever that happened. Butter, ice cream, cheeses those are a little harder for me to give up.