Singer, poet, public speaker, and talk show host Henry Rollins has joined the growing ranks of public figures who support ending marijuana prohibition. Rollins is not a marijuana user, either. As more and more people realize that marijuana prohibition is a harmful failure, the myth that only potheads want to make it legal is continuing to fade into the hazy realm of reefer madness. From a column he penned for last week’s LA Weekly: Like millions of Americans, I have no interest in smoking marijuana…