So I sold and donated all of it, kept what had special value, and re-acquired a lot of it digitally.
I still think I made the right decision, although every now and then I miss something specific and regret it, but I get over it pretty fast.
20 years ago, I ripped all of my CDs into 192K MP3s (perfect enough for my ears) using an online metadata service. Getting rid of the 'jewel cases' (and eventually all of their non-CD content) but retaining the CDs (4 Logic cases worth, 3 sq. feet) saved a ton of room.
For backup I archived the thousands of MP3s onto an 80GB Seagate which I organized by genre, then stored in a shoebox. 12 years later I copied the Seagate to two more HDs. It worked fine (but gave-up-the-ghost later that year).
I've relied on those files since. Unlike several dead self-burned CD-Rs, the manu'd CDs (I never use) seem to have remained healthy in the cases at room temp.
I don't share the anecdote to suggest in any way that you or anyone else would feel the same.
The only "cheat" was a half-dozen boxes of childhood keepsakes in my parents' basement - that are now in my basement. ;-)