The bad guys don’t need active majority support to make our lives miserable; it’s enough if our opponents have people willing to kill and die for the cause and our supporters don’t. That seems to be the case right now, and I don’t see what’s going to change it. If this isn’t Vietnam, then it’s Algeria.
Losing 1000 killed (and we’re now very close to that) doesn’t by itself mean that the war wasn’t worth fighting. But does anyone actually have a plan for winning this thing?