Are Christians the only ones who believe in sin?

I think it might be more interesting to discuss the nature of sin. One of its interesting social features in my opinion, is the way in which the doctrine of sin undermines utopian visions of justice and equity. Certainly in its Augustinian version, it also stops deliberate efforts of social improvement by tagging on the idea of predestination. So sin seems to be in some serious tension with capitalism as well as socialism.

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13