Should incest between consenting adults be a crime?

[Amarok]

Because it sounds like Ob is saying if we allow incest it will lead to other social ails without providing a reason why it would follow necessarily from allowing it .

I don't even understand that sentence.
Probably my fault, language gap.
Could you rephrase?

I was trying to say that it sounds like your saying that if we allowed consensual incest relationships this will be a consequence . Yet you provide no reason why to think this would occur .I hope that clarifies things .