You know, I look at my DVD collection and I see that I am a really poor/conflicted film snob taste wise...I mean I have The Sword and the Sorcerer sitting right next to Gandhi, Dumb and Dumber next to Schindler's List, Robot Monster next to Wages of Fear.
So I don't feel like a total film snob when I say that I didn't like this film However as I have my fair share of beloved "bad" or less than A films in my collection it is odd that I didn't.....there are reasons.
Many who like the film say that it was an action flick so why expect more?
Because #1 the trailers didn't portray it as a simple fun popcorn flick, more like an serious and dramatic alien invasion version of Saving Private Ryan or The Hurt Locker.
#2 even the most retarded action flick has a little character development to make you give at least half a damn about it's characters...I mean ID4 had more character development....did you read what just stated? INDEPENDENCE DAY HAD BETTER CHARACTER DEVELOPMENT WITH ITS PATHETIC STEREOTYPES THAN THIS FLICK!!!
That's a sad statement to make.
#3 the shameless ripoffs from MANY other better films such as Saving Private Ryan , Black Hawk Down, Cloverfield...Etc. Etc.
Warning: Spoiler! (Click to show)
I mean I'm surprised they didn't name the standoff location near the end "Dog One" let alone the line of dialog taken directly from ID4: (paraphrasing)"we know how to take em down, spread the word." 
#4 How about the WALL TO WALL Patriotic music that is usually reserved for the single morale raising speech scene that the commander usually gives in war films to drive the troops onward to "take the HILL!"? For an example, remember the music cue in ID4 when the prez makes his "today is our independence day" speech? It never stopped in this pathetic film, it was overdone patriotic "DUM_DA_DUMMMM" rousing war music from start to finish with no pauses WHATSOEVER in between....granted this is after all a War film but come on.
#5 The aliens were boring, that is unforgivable in a film of this nature. Ebert was dead on in that criticism, virtual stick figures.
Warning: Spoiler! (Click to show)
After an impromptu autopsy the shocking revelation as to how to kill these unfathomable entities? Shoot'em in the heart. Wow.
I mean how the hell did their incredible technology breach the incredible distances of interstellar space when their flying machines cough and backfire worse than a Model T with a bad timing belt?? 
Defend it as a simple action film all you want but even the most boneheaded of those films at least attempt some characters and plot for you to give a damn about.
This was shallower than a Sci-fi channel no-budget giant spiders telefilm or your given Call Of Duty first person shooter.