If your government is like that it is badly broken.
You won't hear any disagreement from me.
In Europe our governments mostly do try to improve our lives, and healthcare is one area that they largely succeed at. It isn't perfect,but it's a hell of a lot better than what the US has.
I disagree there. American healthcare compares favorably with European healthcare when you take everything into account. We have some states that are doing better than others, just like you have some countries in Europe that are doing better than others. Some of your European countries have some very rotten aspects in government and in other societal areas. The PIIGS nations come to mind.
What you describe is not an inherent property of government, it is what Americans have allowed theirs to become.
So you disagree with the statement "power corrupts, absolute power corrupts absolutely". You're entitled to your opinion, and I think mine is on the side of history.
In any case, I'm no expert but from what I hear if you look at it impartially Obamacare has been a net benefit for the majority of people, despite the problems which don't see to be any worse than similar size corporate operations.
By what metric? I understand that emergency room visits have increased under Obamacare, which was one thing it was supposed to reduce. I'm sure there are some people with pre-existing conditions who get cheaper care under the ACA, however until the dust settles it's not clear at what cost. If you drag the whole system down to help some people, the value is certainly debatable.