@Law:
Stop trolling all 3 of the people that you named let Luffy live after beating him also Crocodile let him live twice after beating Luffy until Luffy finally beat him the 3rd time.
_Magellan could have thrown Luffy to the bottom of level 4 instead of wasting time having him put in a cell also Impel down was overcrowded at the time Kizaru was turned away when he tried to bring prisoners to it from sa.
Lucci let Luffy live so he could try and save Robin which was stupid because it showed that he failed to kill him._
I thought that Luffy was pretty much dead, before Robin/Ivankov saved him… And I don't remember Lucci ever being merciful, he tried to throw Luffy straight into the Aqua Laguna. Although, now that you mention it, Crocodile was pretty stupid that one time... When the huge water droplet was falling down and Crocoboy just left without checking... I guess I am just determined to believe that Caesar is gonna be destroyed by the end of this arc.