There are a few ways:

(1) Many people living in the US (myself included) would feel much relieved at their tax dollars not going toward bombing teenagers, weddings, or whatever other Enemy Combatants were yesterday identified with a High Degree of Certainty

(2) The money currently flowing toward said bombing could be repurposed toward general domestic social good, for example in housing, healthcare, or education

(3) Hard to overstate the whole "not continually murdering people on an industrial scale" thing but many people in the US are general humanists and would probably appreciate it