A lot of people have the naive view that repealing Obamacare will return us to the status quo ante, giving us back the health insurance/health care system we had before. Unfortunately that is not the case. Obamacare broke a lot of beneficial features of the health care system we used to have -- including physician-owned hospitals and duty-to-treat charity hospitals -- drove some people out of their health insurance plans, provided others with health insurance plans they never had (and may or may not have wanted), drove up premiums and/or deductibles and coinsurance for everyone (Do you really think health insurers will give that back unless forced to either by regulation or something we've never, ever, had: effective market competition in health insurance? If you do, I have a bridge between Manhattan and Brooklyn you might be interested in buying...).
Abolishing it without a carefully considered replacement that understands this, and a means of transition to that replacement that doesn't produce chaos, will be far worse leaving it in place for another six months to eighteen months to work out an actually viable replacement (yes, ideally one that actually creates real effective markets in both health insurance and health care).
If you break it you bought it. For now the broken American health care system belongs to the 'Rats. If the GOP break it further it will be theirs and the 'Rats will hang it around the neck of the GOP and the Right for decades to come.