It is a complex question since marriage has more cultural effects than religious. For example having four wives is allowed in Islam, so you would expect in countries like Pakistan, atleast religious people would take full advantage of it. But it is seldom practiced over here aswell as similar countries to Pakistan. I dont think it is practiced by all arabs even in Arab countries apart from the royals over there, that could be because they can afford it, or they are following the cultural practice of their forefathers. Another example is marrying a woman older than your age, which is almost taboo in Pakistan and similar muslim countries, reason is cultural. Same goes for marrying independent business woman. Both is actually sunnah but muslims even the hardliners find it hard to do. I did use to hear about my ancestors marrying more than once, so in past muslims of India did marry more than once, but mostly when/if the first wife would die, which happened more often than today due to less medical facilities at the time, that could be one of the reasons. To the question if it is a smart choice, i would rephrase it to marry more than once rather than marrying four times. There are three main reasons to marry, financial, cultural and emotional. In no particular order. Financial Perspective: Islamic It is a islamic belief that Prophet said, marrying could make your financial conditions better. People quote various hadees aswell. At my workplace, people give me examples of how their financial conditions changed after they got married. Ofcourse it is not magic, there is logical explanation to it. The general trend is to get married when you get stable into any job after getting a degree, so naturally one is bound to make more money, get promotions after marriage. Another belief is that anyone who adds to your family bring his/her own rizq, incase of a wife or a child. Logical explanation? please refer above. You can give exceptional examples and make it seem spiritual. Perspective: Smart If you are poor with a wife and children and barely able to make ends meet, consider marrying again to a stable business/working woman, probably someone who could not marry earlier or a divorcee for whatever reasons. That would Still, no dowry please.