Thanks for the support, Lefty

I'm well aware of the etching and potential staining properties of marble, but it's a time-honored interior surface in spite of that. My whole kitchen is already marble, it has some little stains and etch marks and scratches already and it doesn't bother me.
Granite is highly functional but to be honest, I really just don't like the way it looks. And I really hate those manufactured stone tops. In an ultramodern kitchen I suppose they blend in well but even then they look a little hokey to me. For some reason, I do like concrete, but that too needs to be in the right space, and my home was not that space.
Really, the only other serious contender for us was soapstone, which I really like, but it's really, really soft, and ultimately black/green was not the look we wanted.
Anyways, the point is that I've already crossed the Rubicon with respect to marble, in a much more sensitive area. We're talking about a dining table here, and there are ways to be even more careful with a dining table than a countertop. A manufactured stone dining table in my house would be a bridge too far.