Wow, so your group was so closed minded that one thing killed the whole playtest for you before you even rolled dice?
D&D Next won't be for you. Go play something else.
The funny thing is... it's just a play test! For all we know, the hit die mechanic is a module or dial that could be left out or dialed back. If the game doesn't have feedback from it's toughest critics, it's not going to be the best that it could be. Frankly, I would preferred that the group play through it, gritting their teeth the whole time, and give a ton of constructive, but negative, feedback then just say "this is a non-starter." That seems like a cop-out to me.