Disclaimer: I don't own the movie Thor or the comic book series Thor, but I would note that nobody owns the Norse mythology. It was around a long time before anyone came up with the idea of copyright.
A/N: This was in response to the prompt: Thor, Thor/Loki, it gets easier being evil
Practice Makes Perfect
Father and Mother (and a whole lot of other people, too) were always chastising Thor to remember his strength. He had to be careful not to break his things. Breaking things was bad.
Loki had learned the lesson alongside Thor without having to be constantly reminded of it. If breaking things was bad, so creating things, he thought, must be good.
He spent the majority of his life trying to create things. He created spells and found knowledge and birthed children.
And yet it was never enough.
Nobody understood his spells and Thor waves off any desire to learn magic. Thor's eyes glazed over in boredom when he spoke of new knowledge. Even Odin All-father recoiled from his children and called them monsters.
It isn't until he decides to give up, to just be the evil that his *adopted* *kidnapping* *not*-father must expect that he realizes that maybe he had been wrong all along.
When he tries to destroy something, people pay attention. Thor pays attention. When he's explaining his latest plot, Thor watches him with attentive eyes and argues with him point by point.
He still doesn't like destroying things, he wants to create. It's his nature to come up with new and interesting things, but he's learning. And each time he works to destroy, he gets so much positive reinforcement.
Destruction doesn't come to him naturally, but he practices. And each time it gets easier. Each time it gets better.
One day, he thinks, he will be so destructive, so bad, so *evil*, that Thor will stay with him.