I did 4 years SF with 2 tours in RVN.
I did not much care for military regimentation controlling my whole life.
I miss the association of the type and quality of folks in group.
Highly motivated, intelligent, unconventional thinkers willing and capable of doing anything.
Folks who never quit and never gave up. We didn't all love each other, but we knew whose side we were on.
Never found anything in civilian life that even approached that.