Little helper

I was at the post office earlier this morning and saw this little boy do the cutest thing. He was helping his mom carry two packages in so he was following in behind her. Somehow (I still don't know why the mom wouldn't hold the door for her little tot), the door closed on him before he could get in. So there he was, using the packages to push the door open. Of course he couldn't open the doors, no matter how hard he tried so he just started crying. I quickly ran to open the door right next to it, thinking he'd just run through there. But instead, he didn't even realize he could go through my opened door, he just fixated on trying to push open the one that his mother went through. I thought it was cute that he wanted to be like his mommy so of course he wanted to go through the same exact door, because that's what grown-ups do. Eventually, the mother walks back annoyed, screams at him to walk through the open door and yells at him for crying! Are you serious? It's not like he was 10 years old, he couldn't have been any older than 4 years old.