Why did Deku get all the past OFA Quirks but All Might didn't? Deku got the quirks that the past OFA quirk user had (not including OFA).
How come All Might didn't get them also?
My guess is All Might might have stopped after having power to beat any type of enemies and he didn't even get to think of the future that at someday he might lose his power or maybe he understood the power given by his mentor whereas Deku wanted to learn where this power comes from and what can make him more powerful... More like that power generates from emotion and doubt