Satanism

"I would like to correct a misunderstanding, Amity.
Spiritual Satanism does NOT think that Satan encourages one to sell their soul to him, nor does any of us does, infact we do not believe that selling your soul is possible.
Also we believe that if it IS possible Father Satan would not accept it, as his wish is for his children to evolve with their souls into godhead, therefor he would want to keep our souls safe from torement, thus not selling them to any diety.

As for the original poster of this thread, We do not yet know what are your reasons, of course you have complete rights for its privacy, and you may not answer, no one will critisize you, but then again, it would be much more helpful if we knew them, as the solution could be much easier and much less complicated, if not completely different."

You are speaking too generally, there are several individual versions of spiritual satanism, yours is most certainly not the only one.
You need to keep in mind that you can't say what is right and wrong when it comes to spiritual belief, all we can say are the facts regarding history and recorded events. Thus the difference between mythology and history; story to record; belief and fact.

My point is, there are people who believe this. Which I'd think is obvious because we're being asked about it.