You are important to the people around you.

For example, if you lost Marisa, your gatekeeper, your older sister...

...would you want to continue?

*sob*

It was another way to put it.

Do you see? Strong races like you and your older sister...

...may be able to continue one million times exactly like this cat.

But, the majority of humans and weak youkai are only individual coins.

That is the same of this cat's friend. The reality is that it is unable to continue.

No more than that single coin. You are not supposed to destroy life so recklessly because it is transient. Even if it can be done with ease...

...and then there were none, would anyone be surprised at how pointless such a world would be?