I don't even know why. The game IS addicting for reasons I can't understand. Despite my best efforts I have not been able to drop it.
I got blue, and loved it. I held off on buying Silver because I knew Crystal (or something similar to Yellow) was probably coming, then got Crystal and a second GameBoy, then transferred everything I'd caught from Blue onto Crystal.
I played Crystal to death and took it with me practically wherever I went. This carried on until the release of Ruby and Sapphire. I had found an import store that put them on sale on the US release date no less (I really miss that store.), which was amazing for me because Britain never got games early, and I bought both with two GBAs. And when Emerald came out, I got that too. Colosseum... FireRed... LeafGreen... Good lord. Even spent days running back and forth through tall grass to catch Pokemon with super buffed stats, and fulfill my desire to make a team of Pokemon for competitive play.
Generation 3 was no doubt the peak of my obsession, as buying every game in a generation was perhaps excessive, and I can at least safely say that it's something I'll never do again. ( Maybe... -_-; )
It was reviewing the cost of buying all those games that made me say to myself, "That's it! I'm never giving Nintendo another penny for Pokemon, this is the end!"
And I actually managed to stick to that all the way through the release of Diamond and Pearl. But then Platinum came out, and everyone was playing it, and I broke and bought Platinum and a DSLite. (So weak.)
And now here I am having signed up for your lovely forums, holding a preorder for Soul Silver, and polishing a DSi ready for trades. Not quite as bad as I was in Generation 3 but still pretty bad. Playing Platinum every day, taking good care of my Gardevoir so she can walk with me through Johto in just a couple of weeks time. ;P
X3 Gawd.
And I have no idea what it is about these games that motivates me to this level of dedication.
I can't see it stopping any time soon either, I'm already pretty eager to learn more about Gen5. My biggest fear though, is that one day there'll be a cut off for trading from old versions again, ala Gen2 to Gen3. I was able to work past that at the time, but if I ever have to say goodbye to all the hard work I've put in to assembling my army of Pokemon, especially my favourite, it might be heartbreaking enough to motivate me to finally stop.
But I doubt it. After all, they can always be revived in other ways. @_@;
Though I would miss all those ribbons...