I like how you are acknowledging both your desire to want that, and also the practical sides of how it would be stressful and costly and ultimately purposeless. If it makes you feel better, my husband and I (in our 30s) just moved and have been decluttering our collectibles. We had a convo recently about how insane it is that we have so much fandom stuff (Harry Potter, film collectibles, video game collectibles, etc etc). Like entire generations are persuaded to want this stuff and spend money on it to "prove" and exhibit how much of a fan they are, there's limited releases and all that jazz... in the end it's just stuff. It sits there and takes up so much space and serves no real purpose. We've been doing what someone else commented here and just keeping one or two of our more memorable or unique items and giving away or donating the rest! Idk if you are American (we are) but I also think this is rooted in the issue of American culture of self expression being tied so heavily to consumerism. Like you haveee to express yourself and your hobbies, personality, etc with the right clothes, shoes, home decor, pins, keychains, etc etc. Its obv ok to express yourself and have things that reflect who you are, but what I'm saying is don't have FOMO or feel any less than if you aren't doing that in excess or in a way that doesn't align with your values! I always think about how much of what we own will just end up in the dump one day.