Sex with Own Brother ?

Need a real example of how most of the time Life is both conscious ?

Read the link that I got from my friend’s plurk, published in times.com, the title is “I had sex with my brother but I don’t feel guilty”.

I read it over and over again, but still can’t understand it clearly. I heard a lot of incest in the family, but not this kind of things.

I believe old people will say that world is getting older, or the fanatical people may say that God will curse them.

Me ? None of those two above, I’m not the right person to judge.
I just wonder how it could be happen …..