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Gay rights workers suggest that such argumentation downplays the danger, though, of the evils at the bottom of the slippery slope, and society's interest in preventing these evils.  The state has a compelling interest in preventing bigamous relationships, which are (1) a burden on state funding, since marriage triggers social benefits and (2) have a higher incidence of spousal abuse.  These "lines" are not predicated on morality, but on facts.  Similarly, incest is an evil that society has a factual interest in preventing, since incestual relationships often (1) entail abuse, and (2) result in unhealthy offspring.  Since there are non-moral reasons to reject both of these "horribles", gay rights workers insist that acceptance of same-sex marriage (by abrogation of a legitimate state interest in preserving "morality") does not entail acceptance of bigamy or incest.

Gay rights workers suggest that such argumentation downplays the danger, though, of the evils at the bottom of the slippery slope, and society's interest in preventing these evils.  The state has a compelling interest in preventing bigamous relationships, which are (1) a burden on state funding, since marriage triggers social benefits and (2) have a higher incidence of spousal abuse.  These "lines" are not predicated on morality, but on facts.  Similarly, incest is an evil that society has a factual interest in preventing, since incestual relationships often (1) entail abuse, and (2) result in unhealthy offspring.  Since there are non-moral reasons to reject both of these "horribles", gay rights workers insist that acceptance of same-sex marriage (by abrogation of a legitimate state interest in preserving "morality") does not entail acceptance of bigamy or incest.