Typical for a massive rollout of any sort, given the time limits, minimal testing, it has headaches, over time they'll be fixed, tweaked. The critics have the same agenda they've had the past years of this admin, lie, stir, lie some more, see if anything sticks.. So. like you, Medicare, plus Benefits that have us covered, so we only watch to see how it's going..
With friends, family with little or no other coverages, or denials because of pre-existing conditions, we do want this all to be fixed... ER rooms will never cover long term ills, cancer treatments, heart conditions, ACA has to get over the hump... A lazy Congress meanwhile would rather hold hearings than work FOR America and it's people!