Some things are illegal, and others may be immoral, but unlike legalities, moralities differ, depending upon who one asks.

The state must legislate legality, but should not be in the business of legislating personal morality. That should be up to individuals to decide.

Some people do not approve of homosexuality, others do not approve of abortion, others do not approve of assisted suicide for the terminally ill in intractable paralysis and pain, and still others do not approve of drinking or gambling or looking at dirty movies. They should have every right to not engage in such behaviors themselves, but they should not be able to use the state in order to forbid others from engaging in them.