Resources are still finite. You do have the choice on what weapons systems to use. For example, you don't use a 2,000 LB bomb to take out a pick up truck or a sniper. We have other weapons systems that are more suited to close air support.
Nothing we do in the military is economical.
It comes down to effectiveness and willingness to accept casualties. I think the grunts feel those million dollar missiles are worth it if they don’t risk getting shot....
Resources are still finite. You do have the choice on what weapons systems to use. For example, you don't use a 2,000 LB bomb to take out a pick up truck or a sniper. We have other weapons systems that are more suited to close air support.