In the past id say if you didn't have toughness, well you damn well deserved to be dead.
But that was because how everything was set up. However with the new enhancements, do you really even need 30 hp? As far as I can tell it's not a prereq for anything. Unless it's in the robot racial tree or something which none of my alts are.
Going human or helf, horc and so on, toughness kind of seems a waste considering your not getting extra, and stats are just rocketing up.