Just a quick comment about streaming services. The right one for you may be youtube music for a couple of reasons. One, you can upload stuff from your collection to it and fill out those missing holes. Two, you get it with youtube premium and if you're like me and abhor getting bombarded with ads on YouTube, you may want to get premium anyways.
As for collecting, it is a bit strange how it becomes a hobby in its own right. Like you, I had a very curated and meticulously tagged digital collection. The maintenance of it was its own fun, but in hindsight, it didn't leave me with much besides satisfaction in the moment. It's a bit like being hooked on World of Warcraft
