I do realise that film and books are different media, and I do allow for differences between the two when watching adaptations, specifically because I understand that a movie needs to condense into a much shorter timeslot things that books can take time unfolding.

The thing though with I Am Legend though is that if you change the ending, then the title as well as the point of the piece becomes moot really. And in this case they're keeping the book's title for the movie, rather than calling it The Last Man On Earth or The Omega Man.

And really, it's such an awesome book, doing a movie that would actually be close to the book would be excellent. It is a story that ought to lend well to a screen adaptation all things considered.