Baby talk

What is it about babies that makes a grown man or woman start speaking baby? Is there a sign outside every nursery that says “do not enter unless you speak baby” like it is a foreign language all its own. My daughters theory is that it is because they're cute, but I am of a different mind. At that age, sorry but they are not yet fluent in gibberish. No that does not happen until they themselves become parents of a teenager, and by then I am sure they will have a new understanding of why animals kill their young. But here is an even better question for those “goo goo gah gah “ adults out there…..do you not realize how stupid you appear to others and I can only imagine what the baby is thinking….