As far as movie quality, I disagree. Go to imdb.com. There have always been god awful movies peppered by a few good ones. This thread is wrought with good-ole-days syndrome.
That being said, I think my movie going will scale back in the next few years with a simple reason: the blockbuster doesn't have the same effect on me as it did when i was a kid. I prefer the more emotional drama these days.
Further - I really don't have much more to look forward to. The films I always wanted to see done (LOTR, another Superman, XMen) have been accomplished. Really, with the XMen movies, it's been downhill from there, as I had dreamed for a decade that they would make a quality film on this subject.
It will be tough to EVER top the LOTR series. LOTR is my generation's Star Wars. Star Trek's franchise is about to be restarted, but with rumors of an all new cast based on Kirk and Spock at Starfleet, I'm sceptical. Let the franchise die, folks - all good things.
I still enjoy some of the blockbusters - Pirates delivers, and I can't wait for the next one. V for Vendetta was really good. I am hoping for a new Sin City. Also, Batman was great. But I can see that they are slowing down. I don't think anything has changed in the movies, I think I am just getting older.
Whereas 10 years ago I was drawn to movies like ID4 or Jurassic Park, now I go toward movies like Donnie Darko, Crash or Brokeback Mountain. I am becoming a huge fan of Focus Studios - if you don't think good movies are being produced, look at the films they've been putting out for the last few years. I am also finding I enjoy foreign films (Amelie is one of the best movies EVER made. Run Lola Run is good, and Y Tu Mama Tambien is interesting). Finally, I am starting to get into Shakespeare in Film. Branagh's Othello is fantastic.
I think the majic in movies will completely end for me when John Williams passes. I am a big fan of the movie score. A big blow happened when Jerry Goldsmith died. He and Williams were the two biggest names, and thus, two of the better composers in the world for about 30 years. Right now it is John Williams at the top, with the second tier guys vieing to take his place as ruler of the Score here soon.