Because ObamaCare doesn’t allow insurance companies to take into account previously existing medical conditions, so you will be able to wait practically until you are in the ER to buy insurance...
If you do not mind throwing money into the black hole of a yearly fine, that is.
Plus, just speaking from experience, the heart attack I had came on mighty quick. When it did, I had no time to phone the insurance agent. It was get to the hospital or die, then pay.
But having said that, personally I think I’d rather expire than be forced by this government to buy what they tell me to buy. I just really do not care to obey them.