*MAJOR SPOILERS* Finished Last of Us, discuss story, ending and final thoughts

[Mr Puggsly]

Aldro said:

Once again I would never ever bestow such a decision on my daughter.

If she says no -> That would make her feel like she's dooming humanity and she will feel responsible for the rest of her life.

She already kinda knows this, hence why she says at the end =>
"First it was Riley, then Tess, then Sam...".

Then Joel goes like
"Its not your fault and you always find something to believe in, now I know thats not what you want to hear right now.."

And shes like
"Swear to me".

So in a way, I feel her sub contious (spelling check?) is aware of the lie and wants to see if Joel is really going all the way. But another part of her chooses to believe Joel in order to cope with it all. Joel swears in order to remove any guilt she will ever feel. That is the sign of a true caring person. And that is exactly what I would do to someone I truly love even though it might and probably would eat away at me for years to come.

EDIT:
Fuck man this ending is really something <33333

No, Joel sweared because he doesn't want her to sacrifice herself. So he made up a story of how they weren't look for a cure anymore.

Also, he probably didn't he did a killing spree on the Fireflies. Lets not forget, he killed Marlene. The person Ellie knew all her life.