I got Blue & my neighbor got Red when they came out. We restarted several times so we could both start the game with all 3 starters, and we spent countless hours battling once we both got through the game.
I still have the cartridge lying around somewhere, but I'm pretty sure the battery in the cartridge died, so it won't hold a save. I've attempted to play a few of the more recent entries, but while the core gameplay is perfectly familiar, the new Pokemon don't hold my interest, and I find the gameplay a bit too simplistic for my tastes. I think that's more the effect of me having less imagination and ability to forgive poor character design choices.
More than anything, I don't have a neighbor and the seemingly endless free time I had as a child. Pokemon Blue/Red released at the perfect time for me to get compelled and devour the game series, so I'll always have a fondness for the series, but I imagine if I picked up the new game, I'd most likely find myself disappointed in how it can't live up to my rose-colored glasses of the series.