I'm an avid science fiction fan, but this movie is NOT a science fiction movie, just a (very bad!) fantasy movie. And the worst thing is: I usually really like fantasy movies too, but NOT this one... The storyline (if it actually has one) is totally incomprehensible, the special effects are WAY over the top and even in the galaxy they created, there are several actions that are completely impossible, even if you accept all the other nonsense... The characters are incredibly shallow, the aliens are VERY unrealistic and the 'humor' is only funny if you're under 12 years old... The only reason why I gave it a 2 instead of a 1, is that Groot is cute in some scenes, although they overdid even that in most scenes.

All in all, a waste of my time, and, frankly, quite disappointing!