Pre-existing condition exclusions are required because of adverse selection. Flood insurance works the same way; you've got no coverage at all until the policy has been in effect for 30 days. If your house washes away on Day 29 you're SOL.
In any case, I didn't share my story to indict the insurance companies. It was more of an indictment of the healthcare system in general. There was one unavoidable expense: the $4,500 immunoglobulin shot. Why then did the total bill come to nearly $7,000? It came to that much because treatment was routed through the most expensive delivery system (the ER) available in our healthcare system. Why is that? The rabies series is not time sensitive, waiting a few days causes no ill effects. The taxpayers ostensibly pay for it anyway so why not just have it at the County Health Department Monday through Friday?
I try to route my healthcare through my PCP, because 1) I like him, 2) It's cheaper (both for me and society) than the alternatives. Of course, we're killing the PCP providers, they're barely paid cost as it is (less than cost for medicare patients) and there's no incentives for med students to pursue primary/family medicine as a specialty. The ACA didn't do anything to address this either, a fat lot of good having insurance for the first time is going to do you when you can't find an MD that's taking new patients.