Why Americans refused to serve in Vietnam?

Many of them felt that the war was wrong and among these were many who would be forced through conscription to risk their lives to to tickle the fancy of a group of politicians and an arms lobby. This was in fact not a war this was a police action initiated when it became obvious that a corrupt south Vietnamese government bolstered by the US would be thrown out by the communists in a democratic election. Honest and self interested Americans were not interested in being involved