I do believe that in our society, it is still seen as "wrong". The cultural taboo has not disappeared. Many experience sex with siblings as a result of adolescent curiosity but I actively discourage it due to social mores.

__________________
Lots of people talk and few of them know, soul of a woman was created below

I can't get through to her 'cause it doesn't permit
But I'm gonna give her everything I've got to give.

I hear your sweet voice calling
out my name
As I stare from a six foot cell
And from beyond I heard the words
Deceptively Yours