I moved country a few years ago and in doing so got rid of the majority of my possessions - at roughly the same time as clearing my late parents' house and getting rid of most of their posessions. It was all much more hurried than I would have liked, but even so, it's somewhat freeing to not have the responsibility for so much ... stuff ... anymore.
Amongst the things I got rid of were all the 'projects' that I had never started. Getting rid of those and accepting that they weren't going to happen was the most freeing of all.
I still have plenty of stuff and unstarted projects, but the overall burden is so much less.
Finally, I'll note that I think most of the 70s, 80s, and 90s microcomputers that are not especially esoteric now are going to remain available at somewhat reasonable prices during our lifetimes.
Just my 2 cents from a fellow pack-rat.