At age 28, I'm probably one of the oldest Pokemon fans here on VR. I started playing Pokemon at age 21, when a friend gave me Diamond and Pearl. At the time, he didn't have a DS, but he knew I had one, so... free copies of Diamond and Pearl.
Of course, I've since expanded my library of Pokemon games, ranging from Gold and Silver to Black 2 and White 2. However, I still need to get my hands on the first generation (Red, Blue, and Yellow) and third generation (Ruby, Sapphire, and Emerald) to further complete my collection.