Equal treatment: Everyone is allowed to marry one person of the opposite sex. Now some disagree that it should be "of the opposite sex" and instead want it to

Equal treatment: Everyone is allowed to marry one person of the opposite sex. Now some disagree that it should be "of the opposite sex" and instead want it to be: Everyone is allowed to marry one person. Soon the next special interest will come along and want it to be: Everyone is allowed to marry one or more persons.