Did you know that there's an EU country where you could simply ask to be a citizen? That country just happens to be Poland.
Under Articles 18 and 19 of the Polish Nationality Act of 2 April 2009 (in Polish), the President of Poland "may grant foreigners Polish citizenship...at the foreigner's request" (może nadać cudzoziemcowi obywatelstwo polskie...następuję na wniosek cudzoziemca). If you really want to become a Polish citizen, you just have to file a request for citizenship (usually done through the wojewoda, or provincial governor, although it is possible to do it personally), and your request will be evaluated accordingly.
Of course, while in theory asking is easy, in practice you'll need to have a good case for why you want to be a citizen. This is done by demonstrating your ties to Poland (economic, social, etc.), showing knowledge of the Polish language, and having a reason for why you're asking for citizenship.
The only person I know who has received citizenship this way was a Filipino-born academic at the Adam Mickiewicz University in Poznań, and that was because she was denied a UK visa on her Philippine passport, which she needed in order to attend an academic conference. However, she had already lived in Poland for four years, so at the suggestion of her colleagues, she wrote to then-President Bronisław Komorowski. She was subsequently granted Polish citizenship.
There is no difference in the citizenship bestowed by the President and citizenship obtained through the normal process of "recognition" (uznanie, basically naturalization). Once you are granted citizenship, you are accorded all the rights and responsibilities of a Polish citizen, as are your descendants. Because Polish law, including the Constitution, prohibits the revocation of someone's citizenship, your citizenship will be permanent and it can't be taken away.
So? Do you really want to be an EU citizen? If you have a good case, Poland would be your easiest bet, as you just have to ask for it.
To granted
USA citizenship or anyothers