They haven't died. They're still alive, all of them. And safe.
... And the universe is still around because of me. Because of us! We stopped the Dalek! And we put the Master to rest... [Or so he thinks]
Enlighten me by trying to make me feel guilty? No, I think it's much more than that, you clever creature.
To cross ones own timeline, and try to route him through a different path. No, you're plotting something. Something huge. Something clever... Oh, aren't you beautiful.