That may be true and I'm willing to concede that from the original constitution, however, you must admit that the cost of war has skyrocketed.
Remember, the original founding fathers didn't want a standing army and thought it should all be militia based, but of course that's not the case now.
Right or wrong, the world and the requirements have changed.
Would the US be able to truly have zero government involved in other areas? Could it survive?
We could try, but I doubt it would be feasible in today's world.