Yeah, this is a question in bad faith from a child to someone that's been curating a collection of music for more than a quarter of a century.
This isn't even my entire collection, I've got at least a couple orange crates packed with vinyl, CDs, mp3s, concert videos, and even some cassettes for nostalgia. Do I listen to everything I've gotten digitally? Not yet, but I don't plan on stopping my listening any time soon and drive space is cheap, so I figure that I've got time.
Your "logical timeframe" is both naive and deeply insulting. I'm going to enjoy my library hobby anyway, but you can just fuck off with your negative attitude.