MC: Mary, I've removed every possibility of things that could ever make you happy, so that you can have a happy life.
Now that I've removed any chance of you having a happy life, I demand that you go have a happy life, because I said so.
Mary: Keith, you baka!
The fact that every Japanese mangaka seems to think that this is Nex-Level edgy cool-guy™ behavior is extremely concerning; it's fucking stupid, and pretending that it is normal (over and over again in every manga ever) allows people to think that things like this are how one should normally act...
Fucking ridiculous.