what's your saddest moment/experience throughout/from all your pokemon games and playthroughs?

for me it was parting with the OR, AS I pre-ordered and got them both at their midnight launch, despite that I didn't play both much. also regret selling Emerald and trading/selling my White, Ruby and Sapphire because I needed the cash which is why I parted with all these ;_; also regret losing my Diamond who knows where that had my shiny Floatzel and shiny Gloom