Let's see, you had a policy that was cheap, well, because it was a cheap policy. If you got really sick, like cancer, you could be kicked off that cheap policy. If they didn't kick you off when you got cancer, then the lifetime max would kick in and you wouldn't have health ins. although you desperately needed it. Clearly, you had a cheap policy that did a reasonable job taking care of normal healthcare needs and it failed to take care of major needs. But, since most people are healthy most of the time, most people were dumb and happy about their situation, until they got really sick and they became very unhappy with their crappy situation after they were dropped and couldn't get health insurance anywhere because of the health insurance company death panels that evaluated their illness and denied them coverage due to their pre-existing condition.
Clearly that cheap old policy cannot provide the standard of benefits required by Obamacare (which people need whether their short sighted minds realize it now or not), so the policy must be changed to specify new terms that meet the standard, and at a new rate.
You are guaranteed coverage in the exchange, and that policy will not have a lifetime maximum, and you can't be dropped just because you have or get a serious illness. That's a much better policy.
How is that a bad thing?