Yeah thank F#@k for computers alright, back in the days trying to bounce down a full rock band on to 4 tracks and in the end you just had a muddy mix that sounded like it was playing out of someones car stereo with the windows wound up.
Clean tracks are so important alright, if you can get the best takes at tracking it makes the whole job of mixing soooo much easier and means you're not trying to chase your tail polishing turds.