Until I can't emulate them anyone.
Just kidding of course though the fact I was able to emulate my older games did help to get me into the mood of Pokemon, if I didn't go back to my older games I would most likely completely ignore gen 5 just like how I ignored gen 4. As long I can emulate the games that I own legally I doubt I would really ever quit playing the older games. The battery life is no longer an issue.
As for the newer ones, though the "trade while the Pokemon is holding this item" is annoying I can see how they would be able to make it worst. "After this Pokemon been traded while holding this otherwise useless item, you need to train it inside this exact area while it's happiness is max during nighttime. You also need a spare Pokeball and depending on the weather at the time it may have up to 4 forms. blah blah blah o yea and it need to be holding a master ball when you level up and the item shall be lost during evolution." Sometimes I wish they would get the hint that people want it less complex, not more. The fact we have hacks so you can collect them all in one cart and evolve them without the crazy requirements should be a good sign. Do the Japanese seriously enjoy that stuff?
Also of there were to take the DLC/pay-to-play route then I would have to stop cold turkey. I can deal with Dragon Warrior Monsters and Shin Megami Tensi just as well as Pokemon. Honestly I am only into Pokemon as they were the series that won between Digimon, DWM, Monster Ranchers, etc in the monster game clone war. I honestly could do without Gamefreak if given the choice for my monster catching/training games.