Why did Daniel drink the Amnesia potion?

[Datenshi92]

Brutally murdering innocent children is probably something you would want to forget.

*A bit of Spoilers*

Agreed, one thing is trying to save his life by murdering other murders and even that is bad, because we just become as bad as them.
Another is murdering innocent children.

*End of Spoilers*

Even though I got the feeling that Alexandre was lying about those people being murders and what not.
I think most of them were people taken from their homes or explorers with a very bad luck.