Well, I think the search for an ethical theory is still valid. That's one of the main exercises of philosophy, taking a lot of particular data points (in this c

Well, I think the search for an ethical theory is still valid. That's one of the main exercises of philosophy, taking a lot of particular data points (in this case, moral intuitions) and trying to find some overarching pattern or system. Just because we haven't found a consistent one yet (or even if such a system does not exist) it doesn't mean the search isn't worthwhile.