However I am less than convinced we need an army capable of multiple conflicts around the world, for poorly defined reasons.
It just seems like we're fighting small wars all over the place for no good reason. Or at least no reason that has been explained to my satisfaction.
Sometimes I think we're alone. Sometimes I think we're not. In either case, the thought is staggering. ~ R. Buckminster Fuller
"It is only when men contemplate the greatness of God that they can come to realize their own inadequacy." Jean Calvin
The reason the ingroup thing matters is that helping the ingroup versus just worrying about needs is a way to reinforce the culture of the ingroup making it an evolutionary survival strategy instead of an altruistic act. It has a lot of selfishness attached to it.