What is the point of collecting, if you don't consume them? Do you even consume? How many of them are still relevant? How many of those items have any relevant worth? Does this harm your live? Or is this separate from important items? You should figure out which are important, and get rid of the irrelevant. And better start with the biggest storage-waste to free your space. And if you can't decide, remove it all. Thi…
Even if you've only given the material a cursory glance, an archive of content you've previously vetted to some degree becomes a useful future reference source. If you've further annotated the material (added tags or other metadata), then the value increases further. What's the use of a library, generally? It doesn't have to be read to be useful, at least not in its entirety. It may exist to be queried, or to vet/val…
Yes, a good well maintained archive can be a useful tool, of you are actually using it. But OP was asking for help, and not explaining much about the purpose and usage of their collected data. So I assume the most common case here, and say OP is simply a hoarder.
Collecting is a disease, and a very common around here. People take anything that seems mildly interesting with the mindset that it might have some worth at some later point, to never see it again and let it rot in an unmaintainable mountain of datawaste. OP seems to be in that situation, so the first important step is to reflect on the data, their purpose, their benefit and their harm for you. Then you can start with the organizing and maintaining.