I wrote the other day that "marriage is about children." It might be objected that if this were the case, then childless or infertile heterosexual couples would not be allowed to marry. Here is the objection:1. If marriage were about children, then neither infertile nor fertile-but-childless heterosexual couples would be allowed to marry.
2. Infertile and fertile-but-childless heterosexual couples are allowed to marry.
3. Marriage is not about children.
This argument is valid, but the first premise is false, which makes the argument unsound. Compare the following argument, which has the same form as the first:1a. If drinking alcohol were about maturity, then immature individuals who are at or above the legal drinking age would not be allowed to drink alcohol.
2a. Immature individuals who are at or above the legal drinking age are allowed to drink alcohol.
3a. Drinking alcohol is not about maturity.
The first premise of this second argument is false, as even proponents of homosexual "marriage" will concede. There are many reasons of a practical nature, and some of a moral nature, for not disallowing the immature to drink. The drinking age is a bright-line rule that obviates the need for agents of the state to inquire into maturity. Perhaps in an ideal world the law would say that all and only mature individuals may drink alcohol, but our world is far from ideal.
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