My responses were (I weaned when DS was 2 and 3/4) ....

why do they think another mammals milk is better then his mothers?

do you think the benefits of breastmilk disappears just cause DS is 2 and 1 day (or 3 or 100 etc...)

the world average age of weaning is 4; as a lot of babies in western countries are weaned before they are 6 mnths old... that means there are a lot of babies around the world feeding a lot longer then 4

is it any of your business?

do you really want to know the answer to that?

there are others but hopefuly that helps