But there's nothing wrong with that. It's basically the video game equivalent of a blockbuster film. I mean, Star Trek '09 doesn't tell a great story "Oh raggedy bunch of misfit recruits on their first mission must band together to stop a homicidal psycho". But it's fun and the cast has great chemistry. Uncharted's basically like that. It's not trying to tell some grand sweeping narrative about the nature of humanity (though occasionally we might see things like that in the traits and nature of some characters), but that's not really the goal, is it? Something like The Last of Us would be more geared for that type of tale.
Which I don't mind. I'll be honest, I never really played the old TR games. I just played some of TR2 when I was younger. It was alright. I preferred Syphon Filter. But Uncharted is one my favourite franchises, period. If it plays similar to that, if it's fun, and if it tells an interesting (not necessarily good, but fun/interesting/engaging story), it's generally enough for me.
Third person character action games are pretty much my favourite, and this sort of game fits right into the genre I'm interested in. Adventure-horror type thing, you know.