Was the credibility of liberal civilization worth the suicide of liberal civilization?

History is full of futile wars, but the world we know wouldn´t
exist without them. How many of us would exist without the Great
War? I wouldn´t; but someone else would. We have to remember,
that not only has uncountable number of people must to have lived
to produce us, so has uncountable number of people must to have
died to produce us. If they wouldn´t have died, we wouldn´t exist.
But as I wrote above, some other people would.