Conflict
Generally, no, I don't believe that there is anything worth fighting for.
I think that mostly people are fighting for reasons they don't understand. I believe in a universe of consequences. Sociopaths exist because of the circumstances that have created them, including social, political, economical, psychological, and possibly even physiological. Sociopaths and wars are symptoms of other issues, which are not being adequately dealt with. When something that one would typically term as "worth fighting over/for/about" occurs, it is important to question why it has occured, what was the chain of events which precipitated the situation? The reason that this question is important, is because if we recognize the factors involved, we can be vigilant for them in the future. Prevention is better than a cure.
The genocide being carried out by the Nazis was worth stopping once it was happening. Sometimes a cure is necesary. It is a *crying* shame that it ever got to that. There is no excuse for it getting to that. Detecting the symptoms of these things before they become a full blown disease requiring a cure should be high in the priority lists of every man, woman, child and organisation on the planet. Prevention is better than a cure.
Every person in the world has choices to make, picking up the gun is your choice. Choose not to do it. Encourage others to choose not to do it. Help others to improve their standards of living so that they have less reason to do it.
Of course, conflict is only one of a great many serious issues that we are faced with. I do not propose that I have all the solutions or even that I'm correct. I am speaking my feelings on the subject. I do also think and feel that it is through co-operation with our fellow humans that we will be able to arrive at satisfactory solutions to the many issues we are faced with. Conflict and competition are not co-operation.
End.