Why did GlaDOS delete Caroline?

Answer 1

She said right after she deleted Caroline.

'The best solution is usually the easiest one.'

GLaDOS is a sociopath. Caroline is emotion. Sociopaths have no emotion. Isn't it true emotion gets in the way of everyday things? Sociopaths have no emotional restrictions. If it wasn't for the law, a sociopath could do anything they wanted to. They could kill, lie, steal, cheat, anything and not even have their blood pressure raise the slightest bit. Sorry for that psychology crap, but the truth is- having no emotions makes you more fit for survival.

EDIT: GLaDOS dident delete caroline The song Cari mia before the credits was sung by GLaDOS through the turrets if you look at a translation of the song(its sung in spanish) you can see that GLaDOS still has emotions for chell