I'd préfèr a President with the cajones to avoid the slaughter of war.   But like you know, there are some very cruel and murderous people that will only be stopped by violence.    

US history has some armed conflicts that have can't be justified as defending the nation.    "Defending American interest abroad" was a clear statement that we would defend American business interest in foriegn nations.  The US military has provided huge advantage to American international business interest.  

So I'd rather pick a president with a bias against military conflict, rather than one who wants military conflict to exhibit American power.    That does not mean the Commander and Chief should avoid war at all cost either.