"Service in Vietnam" is not telling the whole story

I am not sure why one would conclude that all servicemen and women during the '60s and '70s can make the assumption that you had to be in Vietnam to be abused or defamed by Americans. The only advice I got when I returned to American soil was to get out of the uniform as quickly as possible. I didn't make it to Vietnam, but I was overseas. The homecoming wasn't pleasant, and to this day I still feel that rejection about my voluntary service to my country. Why have you singled out Vietnam for this unequal and differential treatment? This makes no sense to me and a lot of other servicemen and women who voluntarily did our time.