Go do heroin!

I was told the other day that unless I have gone through the military, I haven't a voice to be heard on that particular subject.
By that "reasoning", I should not warn people away from heroin.
Nor should I tell folks about the dangers of stabbing one's self in the eye.
Since I do not have children, I shouldn't opine on how sick and twisted pedos are.
I should not be against rape. For I have never been raped, or have raped, myself.
So even though most vets I know personally have PTSD.
This PTSD that they speak of was acquired while facilitating their duties to the federal government. I must not warn folks away from joining or tell folks how immoral it is to get more young men to go through what they did. Unless these guys are all lying about where they developed PTSD.