Of course if something is fun for everybody, then you should do it. However, I think you underestimate one big aspect: consistent character roleplay is a big part of the fun in BM.
When I see a character take an action that is contrary to everything they've shown before for obviously OOC consideration, then I'm not having fun, whether this leads to a war or not.
And of course, while I'm typing that monster of a response, someone says pretty much what I meant to in many fewer words.
EDIT: Holy crap, that post was larger than I thought it was. Sorry!
