I personally think it was worth it... but then again I'm enjoying many a Blu-ray film.
do you rent or buy? i can't find a rental place (close enough) PHX, AZ yet that rents HD or Blu Ray. I'm about to join Netflix because I'm not a big purchaser of movies.
Down the line it will show its worth in certain situations - and its relative cost vs DVD will also become negligible - but in terms of "any difference," what do you mean? The only (operative) difference has only ever been storage capacity. PS3 is well suited to the year 2008/2009 I feel, and we'll be there before you know it. .
I really think you might be right in the long run. I think X360 is just going to skate by in the last couple of years of this gen on disc space. I expect several late gen releases to be multiple disc.