The joys of FLAC
Lets imagine that you have some music in MP3 format, and you’ve never heard the original source. This could be because you downloaded it from the internet, or bought it at an online music store like iTunes. You imagine that you’re getting the full musical experience with your 192kbps MP3, because you can listen to it perfectly well with no distortion or anything, and if the music really needs it, just bump it up to 320kbps to make it absolutely indistinguishable from CD quality.
For the most part, that’s true, to the point that standard MP3s cover most peoples’ listening needs. I’ve happily built up a 40+GB MP3 library for several years because of this. But only to a point. My opinion changed when I discovered FLAC.