I don't think most of Akatsuki cared about the whole peace thing. They joined for their own purposes, but in the end were used by Tobi to gather the bijuus.
Nagato - Used.
Konan - Followed Nagato.
Kakuzu - Used because he ended up capturing a Bijuu.
Hidan - Same reason as Kakuzu. And he killed off Asuma, if that even matters.
Itachi - Never had the balls to face Tobi while living; Not sure if he actually new that Tobi in Akatsuki was the "Madara" he was talking about.
Kisame - Used by Tobi. Led by hopes of peace. Captured a Bijuu.
Deidara - Captured a Bijuu, or two Bijuus. Not sure.
Sasori - Didn't contribute much to Akatsuki, wasn't really used.
Zetsu - Tobi's tool.
Here's a list of non-Akatsuki that were used by Tobi:
Yahiko - Created Akatsuki because of Tobi.
Sasuke - Almost caught a Bijuu, attacked 5 kages, killed Danzo.
Rest of Taka - Same as Sasuke pretty much.
Madara - This is a maybe. He apparently had something to do with Tobi.
Kurama - Does he even count? But he was used to bring forth Minato and Kushina's deaths.
Yagura - Completely controlled by Tobi.
Rest of the Bijuus - Do they count? Idk, but they're fighting Naruto.