A couple things: 1) The "country" did not rise up against him. Some very intelligent thugs were able to rally enough people to overthrow a very weak, poorly-run government. And this was 50 years ago when many poor Cubans had no idea what Communism was other than that it sounded nice. They no better now and Castro has had to imprison and execute thousands that were once considered from his main support areas (i.e. the Afro-Cubans).
2) The Batista government that Castro overthrew was not nearly as tyrannical as his and therefore not willing to execute and imprison innocent people in order to keep an iron fist rule on the country.
Was the standard of living under Batista as bad as it is under Castro?
No.
Do you know what happens when unarmed people take on communists?
Do you have any idea of the history of the Castro "revolution"?