Zoro would rather die a million times than let you get hurt, and that’s exactly what he did. Even in his last few breaths all he was worried about was you. You were his greatest weakness and while he regrets never getting to be the world’s greatest swordsman or never getting to settle down in that house on the country side with you, he would never regret saving you. Or maybe this is all a bad dream that he will wake you up and hold you like he always had… ;)