ID will eventually take its proper place in the Retirement Home for Obsolete Dogmas, that dismal residence where such fading idols as spirit-caused disease, Zeus-caused lightning, Apollo's chariot causing the day-night cycle, and other myths "explaining" natural aspects of the world now live out their dotage, reminiscing about the glory days.
It may take a while. I've read that 30% of the American public believe in Astrology.