An old proverb says: The intelligent gives in. This is why idiocy rules the world.
Maybe the reason behind this are the wise words of Bertrand Russell, "The whole problem with the world is that fools and fanatics are always so certain of themselves, and wiser people so full of doubts."
I find it to be better for the whole mankind when people solve problems without wasting resources (of any kind). Destroying helpful things or harming people may just produce suffering. So it might definitely not be foolish to give way, as it might still be the second best solution for a problem when the best solution - finding a solution by discussing the problem and finding the logically best solution - cannot be found. When there is a conflict and one party is not willing to make compromises, it is still the more intelligent solution for the other party to give in instead of wasting resources by creating a war (of any type).
War (of any type, be it "just" a legal war, a quarrel or a real war) is wasting energy and resources and in best case it is the third best solution for a problem.
However, raising this rule to the top rule in any case, creates room for the rude and primitive "caveman" behaviour. And here it comes back to idiocy ruling the world.
But this reminds me to the Borg and Star Trek film "First Contact":
Giving in always and forever without setting borders is nearly equivalent to self destruction!
While I like the idea of Myagi, that best defense is not be there (where the hammer hits ;-) ), other than in space, here on earth there is not always much space where to move to be out of the "attack zone".
Related posts: Best defense, There is suffering, The most important things to know, The main purpose, Dissolved aggressiveness.