Coexist? Not on Cthulhu's Watch. We could all coexist in perfect harmony, but we'd only be damning ourselves to infinite pain and eternal madness. There is only one true leader, one Elder God! So come on, take part in some self-flagellation or ritual sacrifice, don't waste your time with all those other religions!
Ph'nglui mglw'nafh Cthulhu R'lyeh wgah'nagl fhtagn!