A fair point, I don't deny it. It's sickening to know that there's nothing you can do to prevent deaths, one way or another, it is. But repentance is not about how the situation may have turned out, in the end, it's not about going back, and doing over again. Because we don't get foreknowledge of what happens, how things are going to end. We make moral decisions blindly, most of the time; we may be able to guess, we may be able to try and work it out, but generally, they're not made knowing the result of them. It's about the fact that you made decisions which were clearly morally questionable, without knowing the result of any of the other possibilities.