All any of us have here are opinions, and yeah it’s my opinion that any time spent doing things that don’t lead to some better future state is the pastime equivalent of junk food: I eat junk food and enjoy it from time to time, but I also don’t ever make the mistake of confusing it with nourishment or trying to justify why it’s good for me.
I do not mind your opinion or way of life, but if I consider other things to be relevant, why can't I use my time to improve in them? Just as you do with the things you consider relevant? As long as the activity doesn't infringe on anyone's liberty why should you be branded as defective for engaging in it?
Besides, it is hard to pinpoint what a better future state means. Doesn't it mostly depend on what you consider important to improve?