First-time fathers in their 50s or older are becoming less unusual in Japan, where the average marriage age keeps going up.Older fathers may feel exhausted quickly after playing with their kids and often worry about their age, health, and postretirement earnings. But on the positive side, they seemingly have more time and money to devote to their children than younger fathers.Makoto Arakaki, a 51-year-old professor at Okinawa Christian University in the southwestern Japanese prefecture, has a 2-year-old daughter.Since his wife, 33, who works as a junior high school teacher, leaves home befo…READ FULL ARTICLE