I had my screamo/heavy metal phase also, though now I'm more into indie (which comes with the benefit of being nearly as weird as I am). I guess I still sort of like it, I mean, it's really great venting music, and the songs I listened to way back when haven't gotten less good. You're right, it's not anymore satanic than today's sexualized pop songs. I guess if I listen to any sort of metal, it's more classic rock, like the stylings of ACDC, Kansas, and Styx (although listening to ACDC, I think they could actually count as screamo).
~Tobi