This was the best movie ever!
It could have been bad, but no, it was great! It had a good source material of giant robots fighting and didn’t try to deviate from that and make it a love story.
And the pacing was good. The cool CGI never becomes boring CGI. The fighting doesn’t last for so long that you tire of it. It changes gears and you have a few moments of drama. Then back to the giant robots.
And nobody is outright stupid! The military is actually doing the right thing most of the time.
It didn’t stay completely true to the original cartoon, and I’m not disappointed that it didn’t. The cartoons don’t hold up well when you are an adult. But they had the few moments that harken back. Megatron from the start accuses Starscream of failing him. As it was meant to be. And okay, Megatron doesn’t transform into a handgun. That was pretty silly when you think about it, and his origin in the movie makes much more sense. He doesn’t feel the need to deny who he is. He’s a giant robot and proud of it.
I have two minor issues. They seem to come up with a Transformers-detector. Isn’t the point of being a transformer is so that you can’t be detected? And at one point they pop the hood of an Autobot and take a look at the perfectly normal engine. Where does the robot parts go then?
Minor quibbles for an otherwise awesome movie.

Why are you still reading this. Go see it.