I want to like it, and I did like some of it. But Coulson's governmental-steamroller approach gets in my way. "We'll get what we want, and we'll flatten anyone to do it. We'll even misuse one of our own team." I mean, I know that SHIELD have a job to do, but I just bristle at that sort of thing, especially from government. (There's also Coulson's smiling while he takes what he wants. Someone's going to take a swing at him, if he keeps that up.)
It was the same way for me with the one-season show, "Threshold". Given the premise, I REALLY wanted to like it. But the way that the scientists, and others, were "recruited" for the project by, essentially, being abducted by the government and forced into it, really left a bad taste in my mouth.
If I were a superhero approached by SHIELD, and they said that they needed my help, but made it clear that working with them was entirely up to me, I'd likely want to help. But the more they tried the steamroller, the more resistance they'd get.
I'd like the show a lot more if they toned down the government's bully-boy tactics. Real life has too much of that.