Is it the wine?

Inspired by the song La Seine and I by Vanessa Paradis.

Zoro drinks wine in the kitchen and that might be the trigger for his sudden realization that the crew's cook is quite a catch.

For Sanji, it felt like the first time he toutched a cigarette, he knew he would spend the rest of eternity graving for more.

Zoro had made it to paradise. It wouldn't matter to him if he were to die now. He knew he would end up in hell, but atleast he got to feel heaven right before the end.
He would rather spend an eternity burning in Hell than never experience this fateful moment.