I understand that, and that’s kind of the point. It’s a hypothetical argument and hypothetical arguments tend not to stand up under scrutiny.
I think you are still missing the key point here. The main point of premise 1is that it is a way of judging actions that are not required for common good.
It seems intuitive to think that many people do subscribe to this way of judging acts that are not directly required for the common good. Many when faced with such an action tend to ask the question “What if everyone were to do it, is that good for the common good? If no, then do not allow it”.
So premise 1 is not hinging on a hypothetical. It hinges on whether or not you personally accept it or not. Not it may well be the case that you are not someone who accepts it. But the point here is that many will accept it and there is ample room for a person to argue in favor of it.
In other words, its hard for someone to just say that the position is simply a religious belief.
You are quite correct to say that because one person is a pirate all will be pirates - but does that not refute the hypothetical argument, in that heterosexuals would continue to have children and as such, it doesn’t matter in terms of sustaining the human race whether gay people have children or not?
No. Why? Because when we are to determine the action of homosexual activity, we only consider the effects of that particular act. Your mistake is that you are still thinking in terms of the probability of an actual world where all are gay etc. The argument does not hinge on that. It merely hinges on you accepting premise 1 as a method of judgement of acts which are not required for the common good.
The common good argument is a problematic one. Not all reason in the same way in terms of what constitutes the common good. Who decides what the common good is and on what basis? You can argue the need for reproduction to sustain the human race is in the common good, but then that brings us back to what I have said above.
Usually, people will agree that extinction of the human race is definitely contrary to the common good (at least I hope they do).
However, it is once again worth pointing out that the main point of disagreement against this argument will be on premise 1. Someone might disagree that they do not see merit in judging an act in such a way. But what premise 1 allows is for the other side to make a very good case. One may also ask the disagreeing side as to what other method they propose.
For those who are on the fence I think the role model argument is a better one. But that’s my personal opinion and people are free to disagree. Many posters who are on the fence could comment on which argument they think is more persuasive.
I do not know what you mean by the role model argument.
It is true many single parents do very well, and we cannot say two men or two women would not make good parents purely on the basis of gender. There is also the argument given the number of children in care and the reluctance of heterosexual couples to adopt or foster, it can be argued it would be preferable for such children to be raised by gay parents than in a home.
True, but this requires actual empirical evidence of effects after allowing the act. This is why I think the argument is weak and perhaps be easily discarded by claiming bias on the sample space.
Where I think the role model argument holds up is it is an established fact men and women parent in different ways and both are equally necessary. There is considerable evidence to support that. Further to this, teaching in my part of the world is a very female dominated profession. Men and women communicate in different ways, they have different teaching styles and even the colors they use in a classroom and the resources they use are different. As such, if one gender dominates in a particular environment it can cause an imbalance in terms of, among other things, development of life skills and how we form relationships. Schools are crying out for male teachers for the very reasons I mention. Therefore, I would say it can be argued that while single parents, two men or two women may do very well at parenting and have no doubt love their children, it is preferable for a child to have a male parent and a female parent.
I do think this is a fair argument (now I also understand what you mean by role model). But it will be much harder to use this argument in a cultural setting like that of the West which has already decided that gender itself is malleable.
Honestly speaking, I think if you live in a society that already does not allow gay marriage, you should do all you can to make sure it never slides to the point of allowing such a thing. Naturally, most people will not be in favor of it and that feeling must be reinforced. One could perhaps even encourage people to stand up against such ideas purely based on religion itself.
In the special case of the West, that solution is no longer possible. The culture has already slid pretty deep. This is why I felt a logical argument will allow Christians some breathing space. Premise 1 as I said is possible not something all will accept. But it gives Christians
- breathing room to argue in favor of premise 1
- opportunity to ask the other side as to what other criterion they would like to promote and then refute it
I personally think premise 1 is very defensible.