"Butterfly, let me tell you, people live just to suffer the pain of this life."
"Doctor, then why did you save me?"
"Butterfly, don't you think it's interesting to fight against the King of Hell?"
... What's the point of this?!
If you died unexpectedly but lived well, would you be happy or disappointed?
That person comes generously and gives you eternal time.
Instead of struggling alone in this world, it would be better to leave more people to live together in this mortal world, which would be worse than death...