Why do Baby Clothes Have Pockets?

I've been wondering why baby jogging pants would have pockets. They don't carry anything. They just don't have any practical reason for being there, especially the ones that you can't barely even see that they are there. Then there really isn't even an estetic reason for having them. Well today little Declan was thwarted by his jogging pants pocket. His hand got stuck in one by accident so Declan struggled for a few minutes trying to free his hand from that silly pocket. Poor guy. He finally got it free.