I really don't do as much repeat viewing with blu's as I did with dvd's or especially vhs tapes. Watching blu's is a much more immersive experience; there is tons more to see and hear in each movie.
With dvd and vhs, watching on small-ish tv's, you invariably miss a lot. The dialogue's often muddy, you can't make out fine details in the picture, and as a result, there are constant gaps in your understanding of what's being presented.
These 'inferior' formats don't lessen the joy of film watching; 'satisfaction' or honky tonk women still sounded glorious on AM radio, didn't they? You don't really need a lyric sheet for jumpin' jack flash. But they often present the occasion to return to a certain point in a movie for clarification.
With blu, you're much closer to the 'limit' of getting it all. It's just richer and more satisfying.