7. Anger Management Issues
Now, anger is a sane instinct, both in humans and Time Lords. It is a natural response to being attacked, insulted, deceived or frustrated and in the incident related to the 12th Cyber Legion entirely justified in some respects. All of those things applied in that particular instance. At the time across the galaxy, at Demon's Run The Doctor's good friend and companion Amy Pond was having a baby and had been kidnapped by Madame Kovarian. Things were in some senses quite desperate when a good man found himself having to go to war. I'm not going to argue that all is not fair in love and war, either. In that situation I do not reliably know how I would have felt - perhaps I might have done the same. But really, destroying countless thousands of sentient beings just to extract a sliver of information? It was not as if the Cybermen had actually got the object of The Doctor's attention in their possession - actually all they had was that they knew where to find it. Neither is it enough to argue that they're evil in any case; therefore, what would it matter if a few more legions were eradicated? That's the sort of thinking that leads to your saying that since all Daleks are bad and all Time Lords are corrupt you could half justify putting them in a Time Lock to keep them out of harm's way... When the big people of the universe get angry then everyone catches a bit of collateral. What was he thinking of?