I loved it! Very impressive story and overall movie-making. It was great to see a villain that wasn't "pure evil" and one-dimensional. It was also good to see that Khan wasn't killed.
So, the next movie is set up very nicely.....Kligons are pissed, Khan is still around, and the Enterprise just started their 5-year mission of exploration.
All of the complaints that I read were nitpicking and I didn't see a problem with any of them.
Finally, how excited are you to see the first JJ Star Wars movie? He knocked Into Darkness out of the park and he grew-up as a SW fan, not ST. Can't wait to see E7 in 2015!