Until recently, with the arrival of streaming, collecting and listening to your personal choices in music was really only possible through physical media. Hence, we ended up with physical music collections, Frankly, I don’t see this behavior as being in anyway strange, but simply an expression of an interest in music. Like jmalen123 I have the perfect amount of CDs until tomorrow - as my wishlists on Amazon, eBay and Discogs attest to. I stream mainly to affirm the purchase, or not, of physical media, as I know at 72 I will die before being able to listen to my entire collection end to end. CD collecting simply reflects my choices emotionally and financially and the value of that music to me and very much one man’s gold is another’s trash - but I didn’t collect it for another man, but me. Am I obsessive, maybe, but frankly I’m also too old to care as it provides immense satisfaction and value to me as it was intended to. Collecting reflects what you love.