User blog comment:Blackendedsoul/No Devil Fruit/@comment-3986064-20110624084050

I think that they didn't care about swimming that much, but why would they need DFs? maybe they wanted to prove that you don't need a DF to conquer the Grand Line, but nothing else, we can't say anything since we don't know Roger very well, we know he didn't run away from fights etc, but we don't know the smaller stuff about him and his life, but he is rash(asking Rayleigh out of nowhere), but other than that we don't know, he might have ideals, loves swimmming, but we can only guess...