Well, honestly I somewhat move on from pokemon every time there's a new generation. When G/S/C came out I was excited and I was not let down after playing it, but once I beat the game, I find myself drifting away from pokemon. The same thing happened when R/S/E came out except I lost my love for the game very quickly(as it DID let me down somewhat). Now that I hear of P/D coming out, I am excited but by looking at the new generation of pokemon, I doubt that I'll be addicted for very long. So to answer your question(after going off on a tangent =P), when the pokemon saga finally ends(which I anticipate won't happen for a LONG time), It will definitely be missed but eventually everyone will move on. People grow up and find better things to preoccupy themselves with and new children come in and the age gap widens of the knowledge of pokemon. I do anticipate telling my children/grandchildren about it and showing them the old movies. Haha, that would be fun. ^^
~Ichi_Bozo