Even the people in Yemen only married two wives in special situations, like if the first wife was barren and the husband hasn’t been yotzei the mitzvah of pru urvu. Other situations include if the husband was an “agun” bc his wife went missing, or if someone was phenomenally rich. You have to supply each wife equally. That means a house for each one, and equal standard of living for each. Why would any normal man even want the burden of multiple wives nowadays?
