The Troops

I've been giving a lot of thought recently to the Troops. Most people are in favor of supporting the Troops, but more and more Americans are starting to see problems with the wars they fight. Poll

How can such a discrepancy exist? Granted, we don't want another situation similar to the one after Vietnam where veterans were ostracized and defamed for their service. However, our two current wars are unlike Vietnam, where American men were drafted to fight. Any soldier in Iraq or Afghanistan signed up to be there. Maybe they believed in the cause, or maybe they just wanted an opportunity the service provided; either way, they are there by choice. Is it right of us to blindly support them?
The war in Afghanistan has been ongoing for nine years, and we have occupied Iraq for over six. I remember hearing a quote somewhere that I always attributed to Che Guevara that said something along the lines of, "If you want to bring down Babylon, make it stretch farther than its arms can reach." With our blossoming debt and blooming fiscal concerns, is it wise to be spending money on two foreign occupations? Perhaps we should further re-evaluate our devotion to causes that demand so much of our blood and money.