I don't see a big benefit for streaming. But playing back your FLAC local files is a big plus. Look, it doesn't really matter whether or not you can hear the difference. What matters more is that transcoding causes progressive degradation in sound: if you care about fidelity, you want to keep your master copy lossless. In any case, the fact is that FLAC is not that rare -- it's supported by most major media players but NOT Spotify, and for many of us, that's a liability.
