Forget the business about fly-by-wire and Normal Law and whatever other technological crap that anyone wants to bring up. Sully made the incredible decision to commit to an off-airport landing with no less than four major airports in about a 10 mile radius. That took guts, smarts, and a level of cool-headedness that no computer will ever attain.
How many of us can honestly say we would've turned the nose of our Boeing or Airbus or Mad-Dog AWAY from 2 miles of concrete toward an icy river?