One of the reasons that we don't have a shooting civil war is that those who would fight are not murderers. Not because they fear jail, but because they know that murder is wrong.Whether for religious or secular reasons, every person I know in the movement has the above integated into their moral foundation. Frankly, I wouldn't want it any other way. Some won't make exceptions for warfare and I'm not convinced any legitimate exception exists there either.
If you are a Christian you might say to me "For what shall it profit a man, if he shall gain the whole world, and lose his own soul?” (Mark 8:36). I don't believe in your gods so I will counter with a simple truism that has served me well:
Integrity is most important when it is hard.
H/T to Artic Patriot