I think it depends on which state you are a residence of. Not all states have expanded medicare, so one cannot take the advantage in those states that sailorchic describes.
Some states have insurance companies that have retained the essence of catastrophic insurance that Stumble says have been eliminated. For example, our previous FL BCBS catastrophic plan was retained for us for the better - for the same price
, we now have better coverage and better terms.
It is still pretty much a catastrophic plan, which serves mostly to protect our financial assets should we become seriously ill (I still can't believe that is a sentence a citizen of the most rich and powerful country in the world would have to write). However, it now covers some basic health maintenance
costs (flu shots, physicals, etc), while not allowing the insurance to drop us should we really have a health problem.
I know other people in other states that have both better terms and coverage than us, have extended medicare, and do not have something as draconian as "CYA catastrophic plans" like we have (no matter how meagerly our plan was extended under ACA).