system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: as someone from the UK, I have no idea why obamacare has been getting so much hate. explain.

I really just have not clue.
gpt
Obamacare mandates that you buy healthcare insurance, or apply for free coverage from the government if you're poor enough or old enough to qualify. It gives subsidies based on income. 

Long story short, there are a lot of Americans who think that the free market is the best solution to all problems - healthcare included. They view Obamacare as evil for two reasons: 1) it forces you to purchase something against your will, and 2) it runs contrary to free market principles.

Many (most?) of these people also tend believe that healthcare in the US is significantly superior to that which exists in the UK/Canada/Switzerland/etc.. Thus, any move toward a European model is viewed as a degradation of current services.