Cookies are happy, because that is their job. Making those you know, and don't know happy. They tell people you care.

Empty?! You took all the cookies!"
"They were crying to get out of the jar... Cookies get claustrophobia too, you know!

I'll feed them milk and cookies.

What about desserts?" I asked. "If the world comes to an end, I'm going to want cookies."
"We're all going to want cookies if the world comes to an end," Mrs. Nesbitt agreed. "And chips and pretzels. If the world is coming to an end, why should I care about my blood pressure?"
"Okay, we'll die fat," Mom said.

Whatever happened, at least we had cookies.

Cookie!" The kid holds up a carrot with the feathery green still attached to the top.
"Seriously?"
The woman gives me a wide-eyed don't say anything look and walks away fast.