Don't you agree that your community encourages high reproduction - which could have been required in the deserts where islam originated - which increases the population in general and specifically reduces the per capita income in muslim family. polygamy more than a religious aspect is a social subject. what is the justification in todays world to have more than one wife when girls are getting killed even before birth? Infant mortality has reduced substantially and almost eliminated in even middle class families in view of the medical facilities.