Quality of Life and Conscription

I posted this comment on a David Henderson Econlog post:

Support for war, and willingness to fight, may be diminishing whether there
is or isn't conscription.

It could be a result of life just being better: more pleasures, more
wealth, more choices, etc. The incentives to sign up and fight just aren't
there.

Perhaps in the past, killing and dying to advance the self-interest of
politicians made some sense because life tended to be nasty, brutish, and short
anyway. Now, life is pretty good in the USA in more and more parts of the
world.

When life is fun, why fight?