To get back on topic? What does it matter? Health care isn't a right and taxing people for not having it is ludicrous. The vast majority of people haven't used obamacare once since its been implemented. Sure some people would be lost without it, but this is a whole vs part issue.
ACA has seen about 18-22 million people since it's been implemented, which isn't exactly the vast majority of people but it's definitely significant. There's around 50 million people below the poverty line in the US, so an affordable health care act is beneficial.
Completely rewriting the health care system without a proper plan will screw over a lot of people, and you make it sound like its no big deal to be without health insurance. Just for reference, i'm asthmatic and whenever I switch plans, which usually takes about a month for me to get new medication, and until then i'm in complete agony. If ACA were suddenly removed, i'd have to go through all the steps to get on health insurance again, which would probably take a couple months. For that entire period i'd be in danger of ending up in the hospital without any coverage, and medication would cost around 70$ every time.
