Because he knew that this close to an election he would be imperiling the coming GOP gain.
If you throw millions out of healthcare now when there is no other recourse for them uou are ensuring that Obama expands the welfare state when he gets a Dem House again. This is why even Cruz didn't call for the same tactic.
The answer is to have a GOP House, Senate and WH. Then you get reforms.
Been there, done that, or is your memory too short to recall?
At least Cruz has a sense of timing and common sense that is clearly lacking in the GOPe leadership. Those sorry suckers can't even raise enough money now.
http://www.freerepublic.com/focus/f-news/3208136/posts