I think the more interesting issue is: with those Big Questions, is there an underlying, objective fact of the matter that we only need to find out? And what if there isn’t?
Take abortion, for instance. Is it the case that there exists an objective moral judgement attached to it? Is it objectively either right or wrong to terminate a pregnancy, and we just have to find out which one it is? Or is it the case that moral judgements are created, rather than discovered?
If there is such an objective judgement, it seems clear that we need to continue debating until we manage to find it – perhaps eventually, somebody comes up with the true killer argument that makes the other side falter and acknowledge the superiority of we all secretly already think we have. Then, the debate will eventually come to an end, with the discovery of a truth.
But what if there isn’t? Then, the debate will go on and on – with no side being objectively any more right than the other. Quite to the contrary, rather than finding the right judgements, the debate creates those judgements – and always on pain of revocation. But what, then, is the status of that debate? It’s clearly necessary, if we are to arrive at any judgements at all – but it also seems somewhat vacuous: if you enter the debate with any sort of preconceptions, as we all do, there can never be sufficient reason within the context of that debate to change those preconceptions, as the other side is no more objectively right, no closer to any sort of fundamental truth, than you are. So why debate?
It starts to appear a little like connoisseurdom: people can become great connoisseurs on just about anything, from fine wine to, I don’t know, pictures of Joe Biden eating sandwiches. There are people who can’t stand wine, people who’ll drink anything, and people who have spent years and years studying into the appraisal of wines from all over the world that shudder at both previous positions. And neither of them are objectively right; yet debates extolling the virtue of one wine, condemning the flaws of another are held with great vigour. So it appears that people also become connoisseurs of particular points of view, if there’s no objective fact-of-the-matter kind of thing to them, and become deeply learned regarding that subject, condemning others for their ignorance on it like the wine lover condemns the cheap grape guzzler, or worse yet, those having the gall of preferring pinot noir to their clearly superior favourites.