Agreed that it's no great crime. And of course, I'm missing out on all kinds of stuff. Not because I'm too busy with ever evolving memes to pay attention, I hope.

The mentality that only today matters, that the past is old and boring, that only the "ever evolving" should grasp your attention, and that who cares if what interests you today will exist tomorrow is distinctly a teenager's mentality.

It's something adults usually -- but not always, of course -- grow out of.

This is no criticism, by the way. It's ok that teenagers think and feel this way. It's also expected that they grow out of it as they mature and become adults.