Subjective Morality?

[robvalue]

It’s true that is doesn't make any practical difference how exactly things ended up as they are now, although understanding the science of the past helps us build overall models; but if such-and-such event happened differently in the formation of our current situation, then we wouldn’t even be in this situation. We might not have existed at all. So it made a potential practical difference.

My point is that if there are "moral facts", whatever that means, then things would appear to be exactly the same as if there weren’t; and vice versa. If anyone can point out a practical difference between the two situations, feel free.