because they have nothing to do?

Kind of the same answer that immediately popped into my head.

If you are on the computer you have to be pretty lame if you can't fins something interesting to do.

Because life is a flurry of meaningless, lukewarm drivel.

because the only thing that makes life interesting is mental stimulation, and i'm sorta finding a dead end as to where that's concerned

yawn

Because we put expectations on ourselves and conditions on reality. We want to be interested, interesting, we want to achieve, to learn, to fill every moment of silence and stillness with noise and motion. We want to feel alive, not realising we needn't work at it. In short we've forgotten how to just be. And just being is never boring.

The world is not a boring place nor a safe place but unless you make it awesome! You can only imagine how capable you really are. The ability to do whatever it takes to make yourself happy. And that is all.