Unjust wars and enabling genocide is probably the more likely factor here, realizing there is no honor in defending these things overseas.

This has been an issue for decades: overseas, not knowing 'why' Americans are dying for nothing, and, the veterans being treated as refuse when they return.

Edit: that may have come across too callous.

The crushing of ones consciesness for unjust foreign wars, protecting a global network of the worst crimes (Epstn files and the international group within it, operating under the umbrella protection network of the US vis a vis NATO).

The most immoral army in the world, the IDF, also has a very high suicide rate - ones conscience cannot be destroyed, it can only be atrophied and dulled, and then depression hunts you.