
Originally Posted by
Prince Laridus Konivaich
The way I see the problem is that 'incest' defines an arbitrary limit for the amount of (political, not genetic, mind you {see below}) relationship between two sexual partners. Why should it be illegal to have sex with your siblings/parents/first cousins, but suddenly be alright to do it with your second cousins?
Statistically, you could be less related to your siblings than to your parents (obviously 50% the same as each parent, but you could get the exact opposite half of each parent's dna from what your sibling's lot). So, incest with your sibling could actually be less heinous than incest with a parent, which would also (most likely) be statutory rape.