The document compares 10 countries based on mortality rates and chance of contracting HIV/AIDS to determine the best and worst countries to live in. Japan ranked as the #1 country due to its high life expectancy of 0.88 years more than Canada and a 75% lower chance of contracting HIV/AIDS. Ethiopia was ranked last with a life expectancy of 25.49 years less than Canada and a 5.3% higher chance of contracting HIV/AIDS. The document provides more details on each country's rankings.