It seems to me that you are dismissing the human factor; the fact that some times no matter how much we WANT to, we CAN NOT get a handle on or control our emotions; you know, the kind of thing that Spock struggles for and barely achieves. Sisko IS HUMAN. Humans are full of emotions, baggage, contradictions... and MOTVATIONS. Like Kirk says, I neeed my pain. Some people handle loss completely differently then others. Sisko is believable, and can not be judged to the same standards as Picard, or any other human... we are Unique, we re Individuals, and we all handle things *completely differently.* Even those responsible and heroic are going to have a ton of questionable choices in their lives to second guess and are not always going to make the perfect choices or react perfectly to their own personal histories and emotional states.