Discussion Reasons to go to war

So some stupid stuff happened, most of it was because of us. The situation was; Orcs have a stockpile of weapons and really wanted to go to war and so proceeded to try and go to war without a role-play reason. I called an admin over cause I didn't want to suffer the consequences of people I couldn't control. It delved into need a reason to go to war and I started to participate because deep-down all the orcs wanted to go to war, so we tried using some reasons like "We are Orcs" or "They had resources we didn't" but apparently those weren't good reasons. A few more reasons popped up but those didn't work either. What would proper role-play reasons to go to war be? Do we have to wait till a reason magically appears?

Sorry to that admin, I don't explain things very well and my emotions get ahead of me, but I'd just like to find a 'proper' way to have fun my way.