If someone asks you why men are allowed to marry 4 wives, ask them; why in the west is it 'allowed' for a man to marry a man?


You can also say, when a man marries more than one woman - it's his duty to treat all of them equally, and pay for her, the children and support them.

However, in the west - there is a limit to how much wives you can have [one] - but there's no law preventing a man from 'dating' or having relationships with any other women [the guy could even have 100 girlfriends, and the wife couldn't put any case against him.]


The final thing you could say is that islaam is the only religion which actually limits the man to have 4 wives, all other faiths don't even have any scripture which limits them to any number less or more than this.