Bemoaning the end of "best of" recordings.

Should we care if iTunes is killing the marking for "best of" music collections? People used to buy these things out of a desire to get to one or two really big songs, but now they can download just the thing they want. So, you can get "Bohemian Rhapsody" without loading up on Queen tracks. But when did "best of" collections become respectable? I remember when it was considered embarrassing to purchase your music in that form. If you haven't been following an artist, you were supposed to pick an album. You were supposed to try to figure out which is the best one, and start there, with a set of tracks in the form the artist wanted. Who cares if "best of" marketing dies?