Debating motivation

I don't like to assign motives. I will characterise behavior, but I don't like to say a person did something because of reason a or b. I prefer to focus on what they did. I am not only uncertain of such things as motive, I think it often distracts from the practical issue of what needs to be done. I don't consider debates courts of laws. I don't feel it's my job to convict people. I'd rather discuss the errors of ways and work to fix problems than speculate, even with strong evidence to support it, on how someone might be a greedy tyrant, or what have you.