You know, MahiMahi really have life whipped. They're like, really happy. Pretty much all the time. I consider myself a pretty smart guy. And I have devoted a good deal of my brainpower to arranging to be happy. And I've succeeded pretty well; I've figured out what I really want, and I've arranged to get most of it (and lucked out some) and remembered to appreciate it once I've got it rather than always be looking for the next thing. If being happy is a skill, I have become pretty good at it.
But even so I'm not as happy as they are. They're like Taoist sages or something, "uncarved blocks" that achieve perfection naturally by being part of the natural flow.
I love watching those two. Incidentally, as usual it may be worth noting that when she said "I love it!" it is likely the original Japanese had no referent--I suspect she just said "Suki!" which would be ambiguous--could as easily refer to, say, the other Mahi in front of her. This ambiguity of just what someone saying "Suki" is talking about is played with often in manga and I'm going to pretend to myself that that's what's happening here.