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While I was driving home from work today, the DJ on the radio mentioned the reality show about polygamy. Since I needed a blog topic, this was clearly a sign from God.
While polygamy is illegal many places, there is still the question of whether it is morally acceptable or not. While I am not a scholar of the ethics of polygamy, the main arguments against the practice on moral grounds tend to be aimed not at polygamy itself. Rather, the main moral arguments seem to be against various ills that are often associated with polygamy, such as the oppression of women.
However, it is important to distinguish between the ethics of polygamy itself (that is, having multiples spouses) and the ethics of specific manifestations of polygamy (such as cases involving underage brides or when the spouses are ignorant of the polygamy).
I am, obviously enough, morally opposed to forced marriages and marriages involving those who are most likely incapable of informed consent (that is, underage brides). It is easy enough to argue that it is wrong to force people to marry or to get “consent” from people who are actually not capable of providing true, informed consent. I am also, obviously enough, opposed to “secret” polygamy-cases in which a person marries multiple people who are unaware of the polygamy. However, the challenging part is to argue about polygamy itself.
One stock and obvious approach is to argue that polygamy is a form of cheating and hence inherits its immorality from this immoral act. However, polygamy seems to be different from the usual sorts of cheating. First, there is no deception since the spouses are all aware of each other. Second, the spouses are not straying outside the relationship since they are all in the relationship. As such, there is no breach of agreement or violation of relationship rights. It also would not seem to be adultery, since no one is having sex with someone s/he is not married to. As such, polygamy does not seem to be cheating.
Of course, it can be argued that polygamy is wrong because a person is morally entitled to only one spouse at a time. However, that is the question at hand. To conclude that polygamy is immoral because people are morally limited to one spouse seems to beg the question. What must be shown, obviously enough, is that the moral limit is one spouse per person. This could be done by arguing that this is inherently the case or perhaps it could be done by arguing that the consequences of polygamy will always be bad enough to outweigh the good (that, for example, a spouse or spouses will be ignored or exploited). Or perhaps some other means of argumentation can be employed.
So, the challenge is this: come up with an argument for the claim that a person is morally limited to one spouse. Religious arguments, of course, need to be converted to moral arguments.
Bonus points if you can prove that the moral limit is zero spouses.