thrice I tried to write an answer and then withdrawn. Not that the issue of controversial, I am quite certain that one wife is more than enough. By 'wife' I mean a legal feminine partner. I have not seen many parts of the planet but from the little experience i have about life and society, wife is not someone who needs to be supported. She has her role and the man has his. If some one can afford, he may hire a maid or a help to lessen the household burden. That will make the wife free from some of the monotonous works in the daily chores and she will behave more lovingly.
I am a strong supporter of monogamy in my public life. But, if God gives me a chance again to start life afresh (with all the knowledge and experiences I currently have) I would prefer to stay single. Not that I am unhappy with the marriage. My wife is the backbone of my family. But still, I think, a relationship does not need a legal sanction that comes in a package of many vices. Marriage is an encroachment into one's privacy and creativity. It comes with a lot of responsibilities and also chaos. Marriage is a tricky thing. One has to fool himself with the team thing while sacrificing individual interests time and again. Its painful. But it also keeps one motivated towards work. I swear, had I been unmarried, I would have worked for a couple of months and sat idle for the rest of the year. One keeps on working not because of the financial needs alone. Work life gives some privacy and self realisation that one does not get when at home.
SO, if you are unmarried, do not go for a wife. There is nothing sacred in it. Its problematic and you would realise it the very day after you have signed the papers.
If you are married to one wife, be loyal to your wife, no matter whether she is loyal to you or not. You are already into something and you have to keep on maintaining it. Divorce is more painful than an unhappy marriage. I have had an opportunity to interact with divorcees from both the sexes. most of them are unhappier than their married life.
If you are married to more than one wife or even have relationship with more than one women you are gone. There is no way you can correct your life again.
So, having more than one wife even if you are able to financially support, is very very very dangerous. Never ever think about it. Its a satanic design to doom your life. Try to avoid such dangerous thoughts.
The arguments are valid if one is thinking about having many husbands too.