[quote=@Heroic]
<Snipped quote by Realmatic>

Well. I certainly notice the fact that we’re opposing someone whose goal is the opposite of wanton destruction.
[/quote]

Her only motivation is to prolong her own life. Without the possibility of the Efficiency of Everything, she would have just tried to kill everybody in Existence so she could work undisturbed. I can't tell you why she hasn't yet, or why she didn't before she thought of this new plan, other than "it would be really difficult."