Do you really want to sleep with your sister?  Why would you want to do that?  Does your sister want to sleep with you, too?  These are all questions you should consider when contemplating sleeping with your sister.  Procreating with a close relative is illegal in most places.  Incestuous relationships often result in offspring with severe disabilities and birth defects.  While pregnancy is not assured if you sleep with your sister, the feelings of regret and guilt may be enough to deter you from sleeping with her.  While you may not feel a great deal of regret after sleeping with your sister, I can almost guarantee she will feel pretty dirty.  If the sex is not consensual, you could be convicted of rape and placed on the national sex offender’s registry where you will remain for quite some time.  While conviction of a crime is also not necessarily going to happen, how would you really feel if you had to live with the fact that you slept with your sister?  How will your future wife feel if she finds out?  I sure wouldn’t want to marry a man who has slept with his sister!

Let’s get down to the root of the issue.  Why do you want to sleep with your sister?  People are often drawn to people who are similar to themselves, and it doesn’t get much more similar than family.  Maybe you should notice the things you find attractive in your sister and look for them outside of your family.  People are also drawn to attributes in others they wish they had in themselves.  What is it about your sister that intrigues you?  Maybe you should work on drawing that out of yourself.

Always think before you act.  Think about the implications for yourself.  Think about the implications for the others involved.  Are they worth it?  Chances are, a few minutes of pleasure (which may not even be as pleasurable as you are expecting) are not worth the lifetime of regret or the lifetime of trying to keep very big secrets.