Hopefully your comment was a aberration. You usually make sense. I'm with Cofty (dammit Cofty, be WRONG once!!).
Bad choices in which wars are begun or entered and how they are fought are typically caused by politicos and not the military; the War in Vietnam is a textbook example of this.
Having worked closely with various current and former military people the past 20 years, I've developed a huge amount of respect for what they do. The vast majority of them want to do the right thing. They are on that wall because they are drawn to protect what is behind it.
I find that a noble cause.