Because of this https://en.wikipedia.org/wiki/List_of_best-selling_game_consoles

Don’t forget about Kingdom Hearts and Kingdom Hearts 2, the original ones so you can play them if you already have them.

PS2 is an older game system than PS3, so it can wear it easier. I also know that I have had problems tracking down a store that had PS2 memory card. Even GameStop stores don’t carry them. And I play PS3 games as well so I would like to have 2 in one instead of not being able to play if something on the PS2 breaks.…