There is no conceivable way for "everyone" to serve even if they wanted to. The modern professional military couldn't possibly absorb a mass of new conscripts. We don't have the budget or resources to train, equip, transport, and sustain them. Militaries of the future will have more robots and fewer humans, and those humans will need higher technical skills than ever before. That is our reality regardless of your political or social concerns.

I don't want to give the military more funding. I favor a less interventionist (but not totally isolationist) foreign policy, and a corresponding reduction in military mission requirements.