Some People Sometimes Do Wrong Things.

[Voltaire2]

1. Sin is mostly an abrahamic religious concept

Overlaying the word on concepts like karma in Hindu or Jain religions doesn’t really work. Buddhism mostly doesn’t go there at all. Although Buddhist theology is just as splintered as Abrahamist theology so there is likely something somewhere in Buddhist thought the looks like sin. Also nobody else has the moral baggage of original sin like Christians- they’ve made sin sinning and sinners the focus of their peculiar death cult.