And your qualifications for making that assessment would be?
> Other countries spend orders of magnitude less than the US on their military, and remain conflict free.
Those "other countries" are, in almost every case, under the defense umbrella of a country that does have an adequate military.
The military budget is set by those who actually do have expertise in the area, not me. I don't need to show expertise to accept the judgment of experts. The OP is disputing those experts, and thus does need to show expertise.
Do you seriously not see the problem with that?
Do you seriously not see the problem with not questioning that? We can’t afford universal education and healthcare, but we can afford aircraft carriers that are obsolete for force projection (inexpensive surface cruise missiles from China) and F35s that can’t fly, kill their pilots, and are generally speaking not fit for purpose? [2].
[1] https://www.theguardian.com/world/2007/feb/08/usa.iraq1
[2] https://www.thedailybeast.com/military-admits-billion-dollar...
Countries can exist without universal education and health care.
They cannot exist without national defense (whether provided on their own or through an ally). Sorry, that is simply a fact.
Also, national defense is a clearly enumerated function of the federal government per the Constitution. Neither of the other two is.
Other countries spend orders of magnitude less than the US on their military, and remain conflict free.
Our current path is unsustainable structurally, and we must switch course.