Some heroes just aren't very bright when it comes to things like that.
Of course, some know better than to go back in time and kill Hitler, as it never works.
...I'm not certain which Richards is being in this case. I mean, I assume the guy would say "srsly, no, why would I even do that." And if he did it anyway, thinking that, "HA THIS WILL DESTROY HIM FROM THE INSIDE FROM HIS CONSCIENCE"... I guess...
...Really, I'm just waiting for Doom to come back and flatten this idiot.