It's also depends on how good the "cause" is
Zoro for example, will sacrifice himself for WSS title.
For average person, that's an silly abstract thing. In this framing, you can can say Zoro lack self worth to sacrifice himself to such a thing.
In fact, This is what Sanji initially thinks about Zoro's ambition in Baratie. He thought Zoro was stupid to sacrifice himself in a doomed fight against Mihawk for his ambition. So this is a rational in-verse view.
Even most Zoro fans will agree that Zoro's life is way more important than WSS title, despite Zoro himself don't think so.
Zoro for example, will sacrifice himself for WSS title.
For average person, that's an silly abstract thing. In this framing, you can can say Zoro lack self worth to sacrifice himself to such a thing.
In fact, This is what Sanji initially thinks about Zoro's ambition in Baratie. He thought Zoro was stupid to sacrifice himself in a doomed fight against Mihawk for his ambition. So this is a rational in-verse view.
Even most Zoro fans will agree that Zoro's life is way more important than WSS title, despite Zoro himself don't think so.
Which you can take as a joke or to be something that he can now see beyond, but the point is that Luffy must have the same faith in Zoro's dream as he has in his own dream, and vice versa.

