Spoilers here, don't hate.
This movie was saved solely by Will Smith. Probaly his best acting ever. That's about all it had going for it. This movie really looked great, and had so much potential, but what you ended up getting was an hour and fifteen minutes of drawn out details of how his life over the past three years has been, all explained to an unsatisfying extent over the course of two days, followed by the last fifteen to twenty minutes steam rolling over the established pace, tying up 90% of the plot and the loose ends in the last 10% of the movie, making it seem extraordinarily rushed. I realise that it has some relevance to the story that the critical events should happen in quick succession, but it just came off seeming like a half-assed rushjob disconnected from the first seventy-five minutes.
They did a decent job of avoiding the typical subhuman intelligence of zombie movie protagonists by giving Will Smith's character the benefit of an extensive array of defences and failsafes to combat the hordes of infected people, but made a few very critical mistakes that could easily have been avoided. (Why didn't the guy have flooding UV lights in his home?)
I really don't know how to feel about this movie. I'm disappointed about it as a whole, but the individual parts were great. If they could have gone with just one pace and one theme throughout the movie, it would definitely have found its way to my collection.