I love the system and they did a great job on it. The games aren't there though.
I agree with you on most of what you said, but this deserves emphasis. While the PS4 environment is a huge step up, all of the games I've enjoyed most are available on PS3 too.
I'm a little surprised though - whatever about the trilogy as a whole, you may be the first person I've encountered who doesn't rate UC2 highly. I played it again recently and found it flawless. That said, different strokes and all that. 
I'll be honest, I love Last of Us and consider it one of the greatest games ever made, but the idea of making a sequel for it horrifies me.
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I refuse to risk even the slightest spoiler, lest anyone who hasn't played it reads my post.
I'm torn between feeling like you, and acknowledging everything NextArishok said about the sheer quality which could still be expected from a sequel. As for the spoiler issue, I agree 100%.
But, if you're reading this as a game-playing adult and do own either a PS3 or PS4, but haven't played The Last of Us by now, what the hell is wrong with you?! It is breathtakingly good.
Sinful, I'm seriously jealous of your excitement but I'm with akots1 - I tried Dark Souls 1 and 2, having had those games recommended to me by friends I respect, and folks here (
) along with Bloodborne, but they're just not for me. I don't have the patience anymore to try to learn to work out what's going on an environment that is initially alienating, if I have no real reason to do so. I do know I'm missing out on some good stuff, but I guess I just prefer my virtual reality to be closer to a reality I can either identify with or imagine with the help of Star Trek as a template of sorts. It's like The Witcher or Skyrim - I have absolutely no doubt they're both brilliant, but I still have no interest because I have an allergy to Tolkien-esque fantasy. As I said above, different strokes for different folks.