How far have we fallen from our founding ideals.
The PRIMARY purpose of the federal government is to provide for the common defense, after that, we are generally pushing the government into business lines that are not clearly defined in our founding documents.
You can argue that "for the common good" covers much of these additional functions, but we have clearly stepped way out onto a slippery slope when we start having the federal government do things like welfare, Medicaid, and education.
So, like it or not, the military-industrial complex is actually something we want to maintain, albeit maybe not at the current levels. However, we *must* be ready to defend ourselves should the need arise and not repeat the mistakes from the past which got us into things like, I don't know, say world war two? Right now we face two specific threats, Russia and China, and a couple of countries who are backed by our primary opponents and/or the third threat of terrorism by religious extremists. We need to be able to sustain a two-front war yet still have resources to deal with terrorism should the need arise. This will take a MASSIVE amount of men, materials, and fuel, and if you want to keep the fighting off US soil, you better be able to project this power long distances (i.e. you better have ships and transport aircraft too)..
Now if you want to just be a sitting duck, with everybody aiming at you while you sit in the middle of a tiny pond, then go ahead, destroy the military-industrial complex here in the USA. By all means. Just take my advice and learn to speak Russian and Chinees because you will need it to survive.