Why do you support the affordable care act?

That's a political question; about 60% of the American population does NOT support "Obamacare", which was mis-named as the "Affordable Care Act". Just as a general rule of thumb, you can generally count on the fact that any political act is named for the OPPOSITE of its actual effects.

In the case of the "Affordable" care act, it was pretty clear from the outset that it was going to cause health insurance rates to spike UP. Since it also DECREASED the amount that doctors would be paid for treating patients, it has a secondary perverse effect in decreasing the availability of doctors and nurses. Because it mandated that every insurance plan include ten specific conditions that MUST be covered - even if these aren't appropriate for the patient - the price was widely predicted to cause insurance rates to rise uncontrollably. This has in fact happened.

One of the especially perverse incentives for Obamacare was that before, insurance plans were limited in that they could only cover a single State. Obamacare "expanded" this coverage, and now insurance plans cannot cover you if you are in a different COUNTY.