Of thing that people seem to ignore on the end of TLOU1 is not only that for Joel the world meant Ellie and it wouldn't be worth to life in a world without her and that is why he was dead set on rescuing her, put that together with he being and feeling betrayed, trapped and jailed. His mental state was totally throwed off and we have to remind that almost everyone on his way was shooting at him to prevent he rescuing Ellie, so yes he saw everyone as enemies so he didn't even need to justify the killing to himself.
duduspace11 "Well, since we are estimating costs, Pokemon Red/Blue did cost Nintendo about $50m to make back in 1996"
http://gamrconnect.vgchartz.com/post.php?id=8808363
Mr Puggsly: "Hehe, I said good profit. You said big profit. Frankly, not losing money is what I meant by good. Don't get hung up on semantics"
http://gamrconnect.vgchartz.com/post.php?id=9008994
Azzanation: "PS5 wouldn't sold out at launch without scalpers."
