A Parenting Question 

I went out running after work today, and when I was a few blocks from home I happened to see a small baby shoe lying in the middle of the sidewalk. As I ran past the shoe, I was thinking to myself, "Well somewhere there is an angry mom pacing around looking for something she won't find." About two blocks later I saw an exasperated father looking around like a mad man, pushing a small child with one shoe down the sidewalk in a stroller. He was probably thinking something like, "My wife is going to kill me if I don't find this shoe."

Me: Looking for a shoe?
Exasperated Father: Yes! Did you see it?
Me: It's in the middle of the sidewalk about two blocks away. You can't miss it.
Exasperated Father: Thank you!

As I finished my run, I started to ponder something. Why does a baby being pushed in a stroller need to wear shoes? It was almost 70 degrees out, so it's not like his feet were going to be cold. He's in a stroller, so he's not going to be walking around. So far I've come up with the following reasons:

1. I'm wearing shoes. You're wearing shoes. What are you trying to say? My child isn't good enough for shoes? Isn't the right to wear shoes what this country is all about?!
   
2. I'm afraid that if I don't put shoes on my child, wild animals will run up and bite his toes off.
   
3. I know he doesn't need shoes, but my wife said he does. After you've been married for a while, you learn to pick your fights. You'll find out some day.
   
4. But they're so cute! With their little soles, and tiny buckles! Why wouldn't you want to put shoes on his feet?

Any other ideas I'm not thinking of? Will some kind parent clue me in here? Because to me, it just seems like another thing your kid can lose which will annoy you later.