Is USA great country?
sure is Geographically. With considering the area of USA. It is 4th in the world, therefore we may say it is great.
In other statistical data the USA are:
10th->13th by GDP per capita in considering the Purchasing Power Parity.
10th by HDI (human development index)
1st in coutry military expenditures (source)
2nd in countries by average wage (source)
7th by high Carbon dioxide emissions by a country per capita
31st by in life expectancy by both sexes (source)
2nd high in incarceration rate in population (693 people out of 100.000 are incarcerated)
and we shall go on… see the world stats for yourself, there are many areas where USA can do better.