fleshwound, as I told unreal earlier... and as the poll results show...
It doesn't matter about age. It depends on personality. If you are a worrier, or just like to focus on "issues", or just plain concerned in general, this is something that tends to remain with ya from childhood to adulthood. Learner is one such guy. He loves to find a cause. Something to make a stand on. To keep up with world events and have an opinion. That's not likely gonna change with age. Then there's other people who just don't give a damn. Passively they may enjoy discussing a topic like that, but it doesn't effect them emotionally.
So straight up, it's all about personality. And yes, of course personality can change. But it changes both ways for whatever reasons.