Why Are we in Afghanistan 15 years and Counting?

As a veteran, I have been wondering why America is still fighting in Afganistan after 15 or more years. After hearing so many lies and excuses from our Leaders over this issue, I now realize that we are there for the Poppy fields, period. The CIA is making tons of dark money running dope from Afghanistan just as they did in Laos back in the Vietnam War. No wonder there is more dope on American streets.
When are we, the American people, going to stop these crimes? It is past time we bring these sad chapter of our nation's criminal history to an end.