I've been reading your rants on here, making some good points but also going way out there and painting with the broadest brush.
When you say that no military is needed . . . country A has one. Country B doesn't. Country A wants valuable B land. Country A marches in and takes it. Country B ceases to exist and is a slave to country A.
So yes. Unfortunately this isn't nirvana.
As for enrichment, sure for a time. After that the state goes bankrupt because military expenditure creates very little and is a social program as such. Why do you think most world powers eventually died off?
A - conscription.
B - a job, whether you like it or not. Especially in the US it is a way for financially disadvantaged people to get a job and an education . . . and the vast majority don't see any military action.