Lol, more like that's what happens when you are a careless freeloader teenager, this guys seem to be one of the worst types to give superpowers, but I have to admit I probaly would use these powers for my own amusement, but not in such an extreme way as them, I wouldn't be a superhero neither because that's just suicide.
But that's the thing. It's easy to say, "if I was in that position I'd never abuse it,". Because there is a base part of us that knows it will never happen. But even in your own statement, you said you'd probably use it for your own amusement. In the beginning of the trailer they did just that. The problem is the part they don't show about the whole getting powers thing is, when you start to have some power or ability that's beyond the terms normal. It's very easy for megalomania to set it. A single notion blossoms from, "I can perform this incredible feat/power. Why do I need to listen to what this cop says? Or why do I need to go to school? Or why do these rules and laws apply to me? I'm above the people they were written for." It can start to snowball effect from there.
Something that I found interesting in the trailer it says, that they're powers were getting stronger. I mean when some people getting a little bit of power, it's easy to go to their head. But if that power is steadily growing. That's when things get hectic.
In closing, I have to add, yeah it's easy to say, "If I had that power or ability, i wouldn't let it go out of control..." But in all honesty, until that really happens to you, how do you really know?
Me personally, I'd like to think I'd be responsible with it, but I know there are dark parts of my personality that would make me deathly afraid of ever gaining such power for fear of what I might do to someone else. But that's neither here nor there.