1) Most cancelled policies were reenrolled automatically in a comparable policy, although some with slightly higher premiums b/c of better coverages required by ACA. Affected almost no one covered through their employer so now your talking about a small number of people relative to population.
2) Who do you think pays for all these people who hit the ER with no insurance, etc. ME & YOU through higher premiums which is part of the problem of increasing health care costs.
3) Health care needed to be taken out of employers hands==too much control over our lives. How many times did you stay at your shitty job b/c you couldn't afford it in the individual insurance markets or COBRA was too expensive.
4) Preexisting conditions covered. BIG improvement.
My take on this is govt rarely gets anything right and especially a huge undertaking like this but something probably had to change sooner or later or none of us could afford insurance. My big problem with this is that it didn't address increasing costs. And if it doesn't either through policy or market forces/competition then this has the potential to be horrible. Especially if insurance companies continue to exclude hospitals and networks of doctors, etc. and undermine the whole system.
My bigger point would be to remember that most politicians don't give a shit about you unless you have "Inc." behind your name. And there are not two parties but only one. And they love the fact that we fight about which is better---a turd sandwich or a giant douche==southpark gets it right sooooo many times!