I don't want to be a dick... ohh hell, why not?

You can blame your brother for this. I'd say they're about average youth but that's more of a judgement on the parents in the world today and not the kids. If you let a kid sit around a stare at a TV all day or play video games, guess what they're going to want to do when they have some freedom? If you get them active, explore different activities and create a "culture" of physical activity, that's what they'll gravitate to when they have more freedom.