I mostly preorder games when I'm importing them, like the Pokémon games. You'd be surprised at how fast stocks dwindle at import sites. I usually don't preorder games being sold in the US, but I do order them from Amazon after the price has dropped or if Amazon is having a deal. Games are usually cheaper to me this way, and I really don't care about the preorder bonus. Occasionally, I will preorder a game if I like it enough that I want it at launch, but that has really only happened for Twilight Princess, Dragon Quest VIII, and Super Smash Bros. Melee.