Advocates of postgenderism argue that the presence of gender roles, social stratification, and gender differences are generally to the detriment of individuals and society. Given the radical potential for advanced assistive reproductive options, postgenderists believe that sex for reproductive purposes will either become obsolete, or that all post-gendered humans will have the ability, if they so choose, to both carry a pregnancy to term "and" 'father' a child, which, postgenderists believe, would have the effect of eliminating the need for definite genders in such a society.