I do agree that feminism is like religion, simply because feminism itself is different from what it has become. Many think of feminists as man-hating lesbian women in suits
but feminism itself is simply equality between genders... and in that case, I do consider myself a feminist. But I prefer not to put myself into that group because of the reputation it has gotten and how misunderstood people are, plus some feminists actually do believe that women are better than men, although there's only a few of them. Some feminist here in Sweden (female) said that heterosexual girls are betraying their gender.
That sort of makes me think that maybe the true meaning of feminism is dying out, but it's not dead yet. Many are feminists without actually calling themselves feminists...