Yet somehow for the first century of our existence we produced many fine men without a military draft.
Yes, we did.
I can't really say HOW the little U.S.A. back then would have needed a draft. Most families were heavily armed for protection against the Indians and wild life.
My mother's family had a rifle mounted in their front room...back in Phoenix, Arizona, where one DID have to occasionally have to deal with varmints, two and four legged.
Also, going into the frontier for more land, free land and such, ALSO required being armed. It didn't seem to be necessary until world wars happened.
Howz that for an explanation?