Even though I own a PS3, I'm not intested in most of Sony's 1st/2nd party games. The only PS3 game (funded, not made) by Sony I absolutely wanted to play is a unique game called Flower.
Regarding Sony franchises -
God of War: I love Greek mythology but detest the ultra-violent approach of this franchise. No-go for me.
Uncharted: Nice, I bought 1+2 and probably 3 one day, but the franchise is nothig special to me.
Killzone/Resistance: I'm not interested in FPS.
LittleBigPlanet: on Nintendo systems I have Mario 2D/3D.
LBP Karting/Modnation Racers: on Nintendo systems I have Mario Kart.
Infamous: there's plenty of more interesting act/adv games out there (best and by far most important: Zelda).
Ratchet & Clank: these games look nice, but I'm not interested enough to buy one of them.
Gran Tursimo: looks great but I don't play these kind of "sincere" racers anymore.
MotorStorm: don't need that when I can get the imo superior Burnout instead.
PlayStation All-Stars: haha, just no.
The strength of the PS3 to me and the reason I bought it - besides Flower and the once still vivid prospect of getting The Last Guardian - is the unique support of exclusive Japanese 3rd party games which actually make it to the west (e.g. Ninokuni, Tales of Graces F, Tales of Xillia, Yakuza 3, Valkyria Chronicles).
