Stupid human tricks

Okay.. I don't get it.

People are SO honking dumb! Especially when they talk to little kids/babies or animals. Why do they do that? They talk in that annoying baby-talk with the high-voices and their voices always go up at the end of whatever they're saying like in old-school french class.
What.. do they think the kid/animal's going to understand them better? Like how people raise their voice(volume) and talk s-l-o-w-e-r to folks who don't speak whatever language they're speaking.

I don't get it.
Annoys me.
Just talk to them like they're people(little kids).. geez. No need to pander down to them.. they'll understand. Body language.. tone.. the whole thing.. kids are smarter than we give them credit for..but are also a lot dumber than want to believe they are.

So.. the next time you come across people going stupid over little kids or puppies or whatever.. help them stop making asses of themselves.