The Inappropriate Behavior of Strangers

We're driving down Broad Street when this voice calls out to us from the next lane. I turn to look, and it's a man in a white commercial van. Here's a transcript of the conversation

Driver: "You have a beautiful baby back there. Just beautiful."
Me: "Thank you, thank you."
Driver: "And what are you doing up there? You should be in the back seat with her."
Me: "She needs her alone time, too!"
Driver: "You don't need to be up there with him. It's all about her now!"
Me: "Aww, she's alright. She enjoys her alone time (fake laugh)"

Here's what I'm thinking:
Look, dude. I don't know how many children you have stashed in the back of your van. But my baby aint gonna be one of them. So do us both a favor, and keep your eyes on the road, Chuck.
Don't be looking in this car at my baby...shiiit....

Who does this? Who operates a moving vehicle and feels compelled to talk to a stranger about the baby in her car? Clearly this man felt it was his civic duty, but he really needed to keep his eyes straight ahead. The man wasn't that concerned for her, cuz a few minutes later he cut us off. Jackass.

Then there was the waitress we had at IHOP. She gushed for five minutes about how cute the baby is, she's got one around that age, her children are mixed too - aren't they the cutest? Meanwhile, my husband and mother are starving, and I'm getting ready to pass out from fever. She even takes out pictures from her apron to show us, then takes our order. When she dropped the check, she asked to hold the baby. I had to shut that down- I told her Tallu was sick, which was true. I couldn't let another waitress hijack my baby. Did I tell you all about the one who scooped up Tallu from her grandmother's arms while asking: "Oh, can I hold her?"
Yeah...

I don't know what possesses people to behave like this.