(My own story: I had my gallbladder out in 2004, and from that time on was denied personal health insurance for BS "pre-existing condition" reasons...until Obamacare.)
But while the implementation is pretty poor, the idea behind it is significant: everyone should have access to health care. Not just tied to a job, not just if you've got lots of money. It isn't working great, but that's the goal at least.
I know there are still lots of people who come back with opposition to that idea (even in these comments a few people are trotting out the whole "universal health care is slavery" junk), but whatever, there are people who oppose all kinds of things. Obama shifted the playing field of expectations, and good things will come as a result of that. That's all I'm trying to say.