A lot of people in my cohort and the one behind mine took the full 10 years to finish their PhD. Several on this forum have used time to complete a PhD as an insult. It shows ignorance and a detachment from reality. Not everyone is in a 3-year, online, non-competitive program with no research requirements beyond the capstone or dissertation. When the median time to complete a PhD in various humanities or social science fields is 6, 7, or 8 years, that means that half the students take longer than 6, 7, or 8 years.