This is all sadly too true, which is why I think we should do our best to declutter as we age. Ideally when our time comes, we should only have things of immediate use and value to us left, and pretty much none of "might be good to have one day".

I've seen instances where people couldn't get rid of things due to grief and decided to keep it all tucked away for several decades, leaving the decluttering to the following generation(s). Better then to be a bit proactive.