There are now enough Republicans to prevent repeal of Obamacare

But at least three other GOP senators have now expressed reservations about eliminating the Affordable Care Act without first settling on an alternative. That brings the total to nine ― well more than the three defections it would take to deprive Republicans of the majority they would likely need to get repeal through Congress. And the restlessness isn’t confined to the Senate. Members of the House Freedom Caucus on Monday evening issued their own call for slowing down the repeal process.
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A Half-Dozen GOP Senators Just Fired A Big Warning Shot On Obamacare Repeal

It sounds like there are now enough Republican votes to prevent outright repeal of Obamacare without a replacement ready to replace it.

It takes some smarts and some pragmatism to realize that if they didn't do somehing there would be dead people from the loss of Obamacare with nothing to replace it. 

These 9 Republicans likely have saved their party from the ruin that would have been caused by repealing it without a replacement and they just may have saved thousands of lives too who would have died without Obamacare or something like like Trumpcare. 

Trump might give them medals or something because he didn't want it repealed without a replacement either.

This is why Trump said to Republicans "Be Careful!" regarding Obamacare.