Just to muddy the water up....
As is said over and over, Satanists are born, not made...or converted.
However, the "feeling" many acknowledge on reading the Satanic Bible I liken to having someone point out the proper places for those characteristics we have been carrying around. We may be born carnal, but there isn't usually a lot of guidance, if you will, concerning carnality. The Satanic Bible points out that it is normal...hang that coat here.
This is probably the hardest thing to explain to a non-Satanist, when they assume something caused you to "become a Satanist".

I didn't really mean "BANG! I'm a Satanist!" When I first read the Satanic Bible, it was like an incredible lighting bolt illuminating my life and challenging all that I ever learned as a Catholic. I hope I didn't come across as "Boo hoo... pity me, boo hoo..."
I was actually making more of a statement about how oppressive Catholicism is and how it can affect young, impressionable children. Of course, all humans are born carnal, but if you are raised under a religion that tries to stamp that out and makes you feel guilty for indulging in any carnal pleasures, it may be a little difficult to live a Satanic life. Nevertheless, I still "sinned" and I questioned my religion as a child. I found the Satanic Bible to be very enlightening. I never really was a good Catholic. Heh.