A Better Ending For "I Am Legend"

The word on the street is accurate about I Am Legend-- it's scary and apocalyptic, but the ending is abrupt and kind of lame-- but (spoiler alert!) I have a much better ending for the film, and if you like, you can forget the old ending and imagine my new ending in place of it: instead of tossing the grenade, Will Smith allows the Dark Seekers to EAT him, and when they ingest his blood (which is naturally immune to the virus) it acts as a vaccine and cures immediately them, but it's very embarrassing when they turn from Dark Seekers back to regular citizens, because they look down and realize they've just feasted upon the flesh and blood of a prominent African American actor who once sang innocuous rap songs, so they all kind of shuffle away, mumbling things like "Let's not ever mention this again" and "Please don't tell my wife that I ate his nards" and once they wander out of the lab, then THEY are eaten by Dark Seekers, who are cured, and this goes on and on in a chain reaction until everyone is cured (and pretty much everyone is dead).