When you think about it, Ariel is a little punk.
Here’s my reasoning: Daddy Fish Person said not to go on land. It sucks. You can’t breathe well. There are taxes up there.
So, she’s a little rebellious bitch and does it anyway. And gets herself in big trouble. Then she comes back, and Daddy Fish Person makes it all better. Gives her legs. Must now pay taxes.
In other words, the moral of the story is, do whatever you want, because Daddy No-Legs will make everything better. You are not responsible for any of your actions.
I wish I had a half-fish Dad to wave a magic, giant fork wand for me.