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If you just listened to the music you owned it wouldn't make sense to pay for a streaming service.
If you want to listen to anything new then you'll likely be paying for a streaming service, in which case keeping all of the old music (which the streaming service can provide) doesn't make as much sense.
I gave most of my CDs away to Oxfam a few years ago. Probably kept 20 or so. (Never got in to vinyl.)
This seems...shortsighted quite frankly. Why pay to stream what you already own in digital form? You can fit about 3000 CDs in a single TB.