You may think that writing letters is old-fashioned and uncool, but you know what else is pretty old-fashioned? Breathing oxygen, but I don't see anyone saying how lame it is that people still do that.
I wish things would glow bright green if they were radioactive like they do in cartoons. The Cold War already seems like the plot of a G.I. Joe episode, so it would be appropriate if the nuclear weapons matched the over-the top mentality of everything else.
Graffiti is the only crime where the better you are at it, the more people actually approve of you doing it. Nobody gets excited when a world famous arsonist burns down their house.