Please stop trying to sound intelligent, it doesn't suit you.
There is NOTHING morally wrong with this, and if you knew how to read, you'd understand that Finn is not saying he would do it, or that he finds the idea of it appealing, he's merely stating that these people have a right to do with their lives as they please, and society has no right to determine how these two should live their lives.
The question of incest only comes into play in law in three circumstances; 1: The two wish to have children (unless the population is too low, and it is deemed alright merely to boost numbers), 2: when marriage is in question (some places allow, some do not as marriage is still seen as a religious hoopla), and 3: when one or both of the two are under the age of 18. Any other time, it is usually acceptable.
Now, please stop trying to debate this article, though some of you are saying it's no longer posted? This wasn't posted for you to be insulting the staff because you disagree, as none of you have posted an intellectual response to Finn, and questioning his sexual orientation only shows how misconstrued your own beliefs are. To put it simply, grow up.
Also, if you knew anything about genetics, you'd know the only reason there is worry of when family members mate that a genetic mishap might occur is because the same genes exist within both person. However, there is a chance that if there is no history of any genetic diseases in the family history, that the child will be just fine. It's only because the gene exists within both parents that the child has a higher chance of contracting the gene which causes the various possible problems.
However, this can be said about any mating pair. If two people who have diabetes and a long family history of diabetes were to have a child, there's a good chance of it having diabetes as the gene is usually passed on. However, if there's no history, the chance is much lower of it contracting it from their genetics.