Consensual Sibling ?

If you are both consenting (ie--legally of age to do so)...then I am ALL for it...I have enjoyed an ongoing physical relationship with my brother and if you knew us, you would think we're just "Normal" folks...we're both in relationships, though only my husband knows and approves/encourages it....we're both very physically attracted to each other and are always there for each other...oh by the way...for those of you that are all caught up on the birth-defect issues...you may not know...but there ARE ways to have/enjoy without procreating!!!