Because not all military get sent to war, and even if they do, they don't all die, and there are lots of benefits and honor in serving in the military, not to mention the many skills that can be carried over to a civilian career that military training provides. Both my grandfathers served in active combat, one in WW2, and the other Korea, and survived, and my father also served in the military, although never got shipped overseas, and I also have two great uncles who served, and two uncles who served. I also have two great grandfathers who served, one in WW1, and one in both WW1 & WW2, and was eventually promoted to an E-9 (sergeant major) during WW2. Out of these 9, I did lose one great uncle in WW2 in the South Pacific, but the remaining all survived with no injuries, despite my other great uncle even being shot down in a plane over enemy territory in the Italian theater. I also have an uncle who was inside a US-NATO tank in Sarajevo, with guns and bombs going off every where. My uncle said it was awful, but also said it was an experience that taught him a lot in life. In any case, I am proud of all of them for having served, especially my great grandfather who served in two major wars, and his men respected and liked him so much, the USAAF promoted him to the highest enlisted officer rank you could be in the USAAF at that time.