The American soldiers of World War 2 who went charging out of their landing craft onto the beaches of Normandy (to fight the nazis-yemach shemam), knowing full well that they very likely would not make it to the beach alive.
Those men had something most are missing today.
The feeling that there is something (a cause, a country) more important in this world than ME.
Today most young people feel there is NOTHING more important than ME.