There was never a gurantee about a cure. It was just a hope. In fact, it gives hope that the sequel will be once again searching for a way to use Ellie to get a cure without having her die.

One Person you love >>>>>>>>>>>>> Everyone/Everything else in the world. 

The world "Selfish" is not one that I like. It implies that the mob has the right to tell/influence the individual what to do. 

It happens all the time in real life. Soldiers kill women and children often and that is during normal operations/war. Imagine a zombie apocalypse type scenario and the fact the soldier even hesitated is laudable. 

Why should Joel give up the only person he still cares about to save a world that's already beyond repair. Joel has been shit on enough in his life. He deserves to have some happiness. Was Joel selfish? Of course, but I think he's earned the right to be selfish.

Purposely? Not accidental shootings, they are ordered to shoot and innocent child and do it?

While you say that is so, I do not believe any (sane) military personel in the civilised world would do that. They aren't cold murderers.

Sort of off-topic

The best parts of the Last of Us is the Colorado parts i think.

It goes: San Antonio Texas, Boston, Outside of Boston, Pittsburgh (crazy), Outside of Pittsburgh, Wyoming, Colorado (crazy), Utah.

Especially if you count the downloadable content which was in Colorado.

I haven't read the whole thread, but did anyone consider that Ellie could have immune children? Mankind would be saved without her having to die.

So every Male should have sex with her to save mankind? Well if you put it that way.. 

Well, you realize she would infect the male in the process, but i am sure it would be a for a worthy cause if you feel like doing that.

...or people with a less dirty mind could opt for artificial insemination.

I did not say what military or what soldiers, but yes it still happens today , maybe not in the so called civilized world that we know of, but it has throughout history. My point is that a soldier ordered to contain a zombie outbreak shooting a child he thought could be infected and was ordered to do so is not very far fetched.