That's because there's nothing to remember. The plot is bland, and the action is blander.
MI2 had a terrible plot, but it at least had Woo's staging of the characters and emotions, and his style of filming action. JJ Abrams is not a visually distinctive film-maker and his action scenes were entirely uninspired. An entirely forgettable movie.
Hey, people, here's the thing - I can't think of any "guilty pleasure" movies. I don't enjoy watching bad movies, or if I do, it's because there's something good about the way in which their bad, and I don't feel guilty about that. Say, you know, Troma and horror b-movies and Takashi Miike - I am quite proud of taking pleasure in watching those.
And when it comes to those big action movies like Transformers and the like, my problem is simply that I don't like them; they bore me to tears, actually.
I don't know, I can't think of a single movie that I like that I wouldn't cheerfully admit to liking in any context.