So regarding Medicare, Medicaid, Obamacare, Social Security,

[Igel]

18. Yes, but "earned" puts them into the category of

things that are yours by some sort of natural right instead of them being an entitlement.

You are entitled to them because there's an act of Congress, signed by a President, that entitles you, after meeting certain requirements (length of work, and amount of past earnings and present earning; or resident status, current income, etc. ) to a cash benefit.

If Congress abolished the two programs there'd be no implicit right to obtaining the benefits unless some court decided that there was an implied contract based not upon what Congress authorized to be said but because politicians leaned out over their skis it making the baseless claim otherwise. You're entitled to them by the text of the law, not by a right of nature. I'd consider it massively unjust, but not even mildly illegal.