Just laws in a free society only prohibit actions that interfere with another's life and liberty. Unjust laws interfere with adult individuals' own private free choice that does not interfere with other's freedom.
Abortion is murder, clearly interfering with the life of the unborn and, therefore, should be prohibited.
Sodomy done in private between consenting adults, though deviant and reprehensible behavior, does not interfere with another's freedom and, therefore, should not be illegal
Disease does interfere with freedom. A propensity toward child abuse does interfere with freedom. Early death and mental disease does interfere with freedom.