Marital disharmony.does the wife have to provide for husband's expense

Both me and my husband are earning well.we work in two different cities.he keeps pestering me to pay for his monthly expenses.his priority are his mom and relatives.my mother in law is domineering and wants divorce.my father in law committed suicide coz he had a psychiatric problem n had fights with his wife.my husband threatens to take away my kids.he doesn't provide for my kids expenses.when both spouses earn, who has to look after family expenses?