I didn't know that you were supposed to tune the guitar to an open chord, and I learned to play slide with a normal tuning. I think it's a little more melodic that way and doesn't sound so bluesy. Of course, if I could play like David Lindley or Ry Cooder, I'd be a happy man!
I am, first of all, a Christian and, secondly, a person with very very serious personal opinion, so I'm motivated by many many things and, certainly, not by the need or desire to satisfy other people's ideas of who I am.