Movie would have been a thousand times better ...
... had Neville been the only normal human in the entire film, with the film focusing on Neville's loneliness and isolation and on his struggle to defend himself against the mutants. Bringing in other regular people (especially so early in the film) and a weak romance only served to make the film incredibly mediocre.
Life is like a box of chocolates. A cheap, thoughtless, perfunctory gift that nobody ever asks for.