I loved it greatly. Terrific entertainment. This is how you do good characters. Great acting from everyone, with the standouts (among a cast of excellents) being Weller, Cumberbatch, and Quinto. And the nods to old Trek were pretty neat and show that Abrams and co. are really trying to be respectful to the canon.
And I merely shake my head and chuckle at the Trek fans who hate it. Seriously, look up some of their posts on AICN and such to see just how outrageous their hatred is. It's crossed over from legitimate complaints to flat-out irrational venom. One person, and this one made me howl with laughter, claimed that it's already common consensus that Into Darkness is one of the worst science fiction films ever made. I had to pick myself up off the floor from that ridiculous statement.