The only people who do not just cry because they have to change their rotations because "X" ability doesn't work underwater, or the tired "I don't do as much damage underwater" argument, if anyone cares to notice you also do not take as much damage underwater so it all evens out except their time to kill is slightly longer. Almost forgot the "I can't optimize my character" argument, because my underwater skills "need" a different set of runes, Oh noes!