Not trying to be a punk. But you are not being honest/realistic. You don't think people without insurance have ignored warning signs, dealt with chronic pain popped otc drugs until the pain or effects of whatever disease/illness you want to use to fill in the blank and then when they finally can't take it anymore or it becomes debilitating they end up in the ER only to find out they have a death sentence? But by you asking me to "prove it", you are being a douche. This shit has happened and will continue to happen. Something as simple as high blood pressure aka the silent killer could be detected via the yearly physical that is now fully covered thanks to the ACA. I'd venture that a great number of people have succumbed to heart attacks and strokes due to high blood pressure.
Calling someone a douche because they ask you to clarify or provide more information is acting like a punk. Really unnecessary. I don't ask set-up/gotcha questions.
You are mixing scenarios. Of course there are people who ignore warning signs, don't get treatment, and suffer and die as a result. But you're also saying that large numbers of these people actually wanted healthcare but were unable to obtain it because of cost, etc. That's where we disagree.
If you look at my state for example, we have a law that requires employers to provide health insurance for every employee who works at least 20 hours a week for 4 consecutive weeks. In other words, anyone with at least slightly more than part-time job has health insurance. For those who are unemployed, or employed less than 20 hours, they qualify for Quest, which is our state equivalent of Medicaid. Quest includes preventive healthcare. Are there people who still slip through the cracks? Yes. But it's not a large number of people, despite what some activists say. People by and large choose not to take advantage of available resources.