Do you think that hula hoops will ever come back? Will poodle skirts ever again be the Next Big Thing that all the chicks wear? Do you buy into the idea that the music world will see a re-emergence of ragtime as the primary form of popular music? No?
Then what on earth makes you think that roleplaying games will ever be as popular as they were in the 80's?!?
Let's get this out on the table: D&D was a fad in the mid-eighties. Nothing more, nothing less. Like any other fad a handful of social misfits continued to hold it near and dear to their hearts long after the rest of the world stopped caring. You and I are those rejects. And our beloved hobby will almost assuredly never reach the heights it did back in the day. Just get over it, please! Don't attempt to position RPGs in the mainstream. They were already there and the mainstream world moved on.
No licensed property or blockbuster movie will drive people back into the hobby. Stop acting like a new golden age of RPGs lies just around the corner. That golden age is already happening right now at a thousand tables where people are playing the games they love. The people who are at this very moment rolling dice aren't worried about the place RPGs hold in the world at large, nor are they dithering about whether there will be another generation of RPGers. Of course there will be more roleplayers, just like you can find barbershop quartets made up of people who aren't a million years old.
In short: Shut up and play, fanboy.