Survey: Vets say Afghanistan, Iraq wars not worth it

America's veterans are proud of their military service, but in a new report published Wednesday, they expressed ambivalence about the wars in Afghanistan and Iraq.

In a new Pew Research Center report on war and sacrifice, half of post-9/11 veterans said the Afghanistan war has been worth fighting. Only 44% felt that way about Iraq, and one-third said both wars were worth the costs.

Some of those costs were outlined in the Pew study, which comes out as the United States marks the 10th anniversary Friday of the Afghanistan conflict, the longest-running war in the nation's history.

For instance, four of every 10 veterans reported they had difficulties adjusting back to life at home after the combat zone, and 37% said they suffered from post-traumatic stress, even though they might not have been formally diagnosed as such.

"The ambivalence that many post-9/11 veterans feel about their military mission has a parallel in the mixture of benefits and burdens they report having experienced since their return to civilian life," the report said.

Read the full story and check out the complete report from the Pew Research Center