Nobody wants to fight in a war.
Children have been forced to fight in wars.
Old men have been forced to fight in wars.
The nature of wars is... they force people to fight.
Underclass children and underclass old men. Politicians and other elites choose not to. Why would anyone in there right mind choose to make the ultimate sacrifice when the people who basically control the country and ultimately benefit from it refuse to? If women, politicians, the wealthy and their families were forced to fight in wars, you'd see a lot less wars. These wars are started over geopolitical bullshit that the people that fight them have no control over. Let the wealthy and the powerful fight.