Reasons for keeping lossless audio

• maybe today, you, with current environment cannot hear the difference between 320kbps mp3 and wav.
  • What about tomorrow?
  • What about other people than you? (At least as DJ you should probably care about others)
  • What about a different environment, e.g. new speakers, headphones ...?
  • What about effects that one cannot hear, but are still there?

If you want to save disk space, use lossless compression, e.g. FLAC.

see also: reasons for keeping full CD rips