Most people do not have the ability to emigrate. Hell, a great many people barely have the economic ability to move across their own state, but emigration requires that the country you're trying to move to is willing to let you live and work there permanently. I don't know if you're familiar with the difficulties involved in this, but I can assure you they are significant.

Dismissing the loss of freedom inherent in conscription by saying you can avoid it by abandoning your entire life, leaving your country, your job, probably your family behind...even if you do have both the money and a legal path to immigrate somewhere else, which, again, most people do not, that's hardly a reasonable alternative.