[e-v]

I think you missed the OP's point. This is precisely not about "being useful to you" or "useless to someone else". The point is that not everything has to be useful, and that it is ridiculous to have to have to find some economic (in the broad, neoliberal sense) incentive to do this or that. Just do things for the sake of doing them (or not doing them), not as part of a strategy.

It is a universally accepted fact that physical exercise is good for you, and a lot of people enjoy it. If you don't exercise, it's either because you don't have the time to do it or you can't be bothered (or a bit of both). If you do have the time, then just go for a walk and stop finding excuses not to. I'd rather see people not go for a walk because they can't be bothered than convince them to do it because it'll make them more productive, better adapted to the job market, improve their "human capital", or whatever ridiculous reason "life hackers" come up with.

[Tenoke]

You yourself jump from

>The point is that not everything has to be useful

to framing it in terms of its usefulness

>physical exercise is good for you