He's the only Akatsuki guy (save from early Tobi) who was actually getting into combat. The other members was just like "whatever, it's your funeral". Kakuzu probably liked it, but it wasn't in his personality to say "ALRIGHT, LET'S GO MAKE SOME PAPER!!" And Hidan....he didn't even need to fight people to get aroused by pain. Deidara was the one guy who had fun combating. This is probably why I only like Zaraki Kenpachi in Bleach, because he's the only guy who fights just to fight.