The other wars had attacks on Americans.

The last time a draft was used was Vietnam and that war was lost because I suspect it was never meant to be won and because the American public turned against the war. The people who were drafted into Vietnam had fathers that fought in Korea and World War II and the idea of serving your country was still a somewhat popular idea. America no longer has that blind patriotism that our government wrote checks with and used the lives of young Americans to cover the cost. We don't live in the same country. Even my generation who joined to fight "terrorism" and instead committed genocide under the guise of protecting America became disillusioned with what the government said needed to be done. The US government no longer holds the sway they once had and people are much more hesitant to throw their children into a woodchipper for criminals in suits who are called politicians.