It's Great to Be Alive (film)

A young aviator, Carlos Martin, is dumped by his girlfriend, and heads on a solo flight across the Pacific Ocean. He has engine trouble and makes an emergency landing on an uninhabited island out in the Pacific. Shortly afterward, a pandemic of a new disease called "masculitis" kills every fertile male human on the planet. When efforts to cure the disease fail, the human race is doomed. Humanity's institutions are all run by women, including the Chicago underworld. Carlos escapes the island, and once he returns home and hears the news, it now depends on him to continue the human race.