I may have been on psychedelic mushrooms at the time, but something I took away from the trip was an acknowledgement of a feeling of 'shedding' in life, in terms of hobbies and interests.
Stuff will get boring and be forgotten, or fall to the side and be ignored while it collects dust. This is something that I should expect to happen, and be prepared for. So long as you derived some value from those once-great things, it hasn't been a waste, and is just a symptom of time passing.
Maybe you pick those things back up later, and maybe you don't. For myself, I think my 'best life' would be one where I had the space and tools to be able to pick up or put down whatever ideas come to me.
I had a very similar feeling in a similar setting, like a large part of the process of life is scrubbing crusty exteriors off so that new capacities can emerge. Like continuous molting.
Thanks for the reminder.
Somewhat related is a one-player game I'm looking at, called Thousand Year Old Vampire. Eventually, the character must choose what memories to leave behind. It's going to be a strange experience when I get to that stage.
Since moving into the workforce, my free time is no longer segmented into so many pieces. I don't get as much value as I used to from 10 to 15 minute chunks of entertainment, so I stop keeping up with the sources, and just lose touch.
It isn't that the content I'm leaving behind is bad or 'cheap', it's just that I don't have the time and attention to keep up with most of it. My entertainment time is better spent on stuff that takes longer to engage with/consume, since those bigger things are often more valuable as entertainment.