Yes, if I ever end up getting a PS3 I definately would only get a BC version.
I did not have a PS2 so I missed out on some games I would like to play. And same as the Wii, I would be dissapointed if it didn't have GC BC.
Sure if the PS3 never had BC then i wouldn't worry about it at all. But if one has it and one doesn't then I would want the one that does. Though 100 dollars if a bit much to charge for BC. You can get a ps2 for that price. and much cheaper if you buy used.
They shoudl just duct tape a ps2 ontop of the ps3 then, heck its not like you don't need to make a lot of space for that ugly machine anyway. (yes i think the ps3 is ugly, thats an opinion. so no arguements are necessary) I might also find yoru girlfriend ugly, you wanna fight about it.