Apparently yes since:
If you believe those quotes are out of context, please read them whole, as usual...
I said that because of the recent situation in America. That wasn't specifically pointed towards this subject.
If you consider this then one has to understand which question is being asked:
'Is incest bad?' (e.g. inbreeding) or
'Is incest wrong?' (ethics)
Even if we believe that consenting adults should be able to have sex with whomever they please, reproducing with a close relative has serious drawbacks. I should just leave this here:
One study found that 40 percent of children whose parents were first-degree relatives were born with autosomal recessive disorders, congenital physical malformations, or severe intellectual deficits. According to the study, when first-degree relatives mate, the risk of their child suffering from an early death, serious birth defect, or mental disability increases to almost 50 percent.
The context of this thread is incest in germany, not ssm in the usa. Two consenting adults having sex is not illegal in germany, no matter who. That is what this "law" says. We all know the numbers but that did not stop people from rejecting that reality.
It is as it is.