I love these kind of threads. Even if I don't find myself in the same situation, it gives me new ideas and things to think about regarding my collection habits.
I'm still relatively young at 35, but I have been collecting my whole life, focusing mainly on 1:6 for the past 15 years. I'm still fully happy with this hobby and get a lot of joy out of it, and don't see an end in sight anytime soon. But I do wonder if there will ever be a point where I will simply lose interest.
I don't really make "plans" for my collection that go further than the next 2-3 years. It's essentially what I have on pre-order + customs I'm working on & planning + specific displays I might want to build. Beyond that, I try to enjoy the moment and have fun while doing it.
Despite collecting for so long, my collection has also always remained fairly small, at least compared to most people on here. I'm currently at an all-time high with about 20-25 1:6 and 1:4.
feeling like the right time for me to focus on doing things rather than collecting them.
This is something that's been going through my mind for the last couple of years, and I think it's the main reason I'm loving this hobby so much. As a sidenote, I'm actively focusing on decluttering my life, getting rid of things like CDs, DVDs, books, random crap in boxes, etc. I want to focus on letting go of my attachment to physical objects, and fight the urges of completionism and general collecting/amassing things. And while I still buy these expensive toys, the customizing aspect of it is what gives me the greatest joy.
For me, it's what takes the hobby from "buying a lot of things", to creating new things, dare I say art. It gives me a much greater sense of fulfillment, and at the same time makes me care less about the actual objects. If a figure breaks or deteriorates, I can always fix it, upgrade it, whatever.
In the end, everything is uncertain, but at this point in time, I don't see an "end game" for me.