Having a Hi-Def game come out at only 720p IS DISAPPOINTING and it IS a good argument for not wanting to buy it.
You wouldn't buy a $20 BluRay movie that was at 720p.
You wouldn't pay full price $12 for a movie that was only in Stereo sound.
We pay big bucks for 1080p 5.1 Dolby surround entertainement systems so we excpect our $600 gaming systems to be able to play our $60 game titles at full capability.