First of all, let me just say that I am a huge fan of DVD's, both of films and TV shows on DVD. The DVD format has truly revolutionized home video viewing, and we are now able to watch films and TV shows in a high-quality format that we never could before. Also, there are many films that were never on VHS that have made their way to DVD. This especially holds true for TV shows - we are now able to watch entire seasons of a TV show on DVD, and many/most of these shows were neveral available on VHS. Also, the picture/sound quality of DVD's are exponentially superior to their VHS counterparts. Plus, from a logistical standpoint, DVD's are much easier to store, are lighter, etc.
And, DVD's are, overall, much cheaper than their VHS counterparts were in their heyday.
That being said, I have seen Blu-ray DVD movies, and though the picture quality is probably better on Blu-ray DVD's when compared to regular DVD's, the difference is not as significant as the one between DVD's and VHS tapes.
Also, something that is critical when comparing Blu-ray DVD's to regular DVD's is the quality of the TV or computer monitor that you are watching the DVD (or Blu-ray DVD) on. I watch DVD's on my CRT computer monitor, and the picture quality is, for the most part, superb. The only times I have a problem is when the picture quality on the DVD itself has not been sufficiently re-mastered (or if the print is too poor to re-master). This is especially notable on older movies (or older TV shows) that were shot on film stock that has degraded, or TV shows that were shot on video - or, when the DVD print transfer was done directly from the VHS tape.
Anyway, I'm not too thrilled at the implication that at some point consumers will be forced to buy a Blu-ray player and Blu-ray DVD's because they will stop making regular DVD's. I for one will stick with my DVD player (and regular DVD's) until forced to do otherwise.
Just my .02....