You can feel free to dismiss compressed audio, but the fact remains that the lion's share of the music business consists of compressed audio... iTunes store, Amazon, streaming services like Spotify, Pandora and Tidal... The vast majority of music listeners are listening to music on compressed formats. I think it's kind of important to know how compression works and what it's thresholds are. My library in lossless would span many TBs. It would require a lot more work to backup and manage. And all that extra trouble wouldn't result in one iota of better sound quality. For a small library, it might be different. But most people with small libraries have just turned to streaming so they can have a wider selection of music. And repeating again... datarate is not a good measure of sound quality. There are voice codecs that you can boost up to the same data rate as a CD and they still won't achieve transparency. And AAC is able to reach transparency much lower than PCM. The codec is what matters, not the numbers.