Why would Thanos' killing half of the life in the universe please Mistress Death?
I mean, all men are doomed to die when their lifetime comes to an end. Mistress Death could just wait and watch; the lifespan of mortal men should be only a moment to her. So why did Thanos go to such a length to gather the Infinity Stones and kill half of the life in the universe?
If Mistress Death really wanted more death, shouldn't the right thing to do be creating more lives (raising fertility)? After all, only the living can die.