Essentially I’m pretty secure in my own spirituality and vague deist type beliefs but I do like reading religious books or books on life philosophies etc.
I’ve read the Bible, it has a lot of good stuff in it, but also a lot of crazy stuff and well it didn’t give me any moment of religious rapture.
I’ve listened to Mormons and others and heard what they say as well, in general I find them to be good people but not exactly tolerant of womens rights or other liberal views I hold. If it works for them cool, so long as they don’t force such values upon me.

I did a lot of exploring of gnostic religious traditions mainly the suppressed Christian Heresies but also looked into Sufism and so forth. These resonated with me on a spiritual level but at the same time tended towards turning your back upon the world.

From what I’ve read of modern Satanism it is a philosophy that has a greater engagement with the world around us and the way to live life.
And whilst I highly doubt that all its precepts will marry up with my own beliefs I do believe that you should challenge what you believe through such broadening of your horizons, and that doing so reforms your own innate beliefs into something greater and more complete.
I doubt the book or whatever will make me a card carrying Satanist, but I’m not closed off to that possibility (merely skeptical)

So yeah for me its about personal philosophical journey and education etc.

Additionally – this group does seem to collect its fair share of hardcore Christians trying to save souls doesn’t it?
For such people a word of advice, telling folks that they’re going to burn in Hell is hardly going to make people change their minds on such things. Perhaps trying a gentler approach in your task to redeem people might be more successful. Acceptance and understanding, and the parable of the prodigal son might offer you some assistance.