You don't care, until you see someone wearing a god charm or realize to make your dream set you need a particular talisman with a certain skill combination, so you mine and mine, and search for all your days without getting the one you need, and maybe sometime later you'll bite the bullet and download Athena's Charm Table Search and realize you're on a cursed table and that one Talisman has never been within your reach, and never will be.
I met a guy online who said he'd been mining two weeks straight for the Handicraft +5 / Free Element +7 Talisman his friend got, and when I mentioned that it was only on Charm Table 10, he said "what's a charm table", at that point, I felt really bad for him.
Knowing your charm table is knowing the potential you have. You don't have to try and table snipe, but a little knowledge goes a long way.
Nope. I don't care to much as well. I'll do some mining runs in the next days and see what I can get, but whatever it will be, it won't change how I'm playing the game. A couple of hours won't kill me, I'll end up with charms and money and I guess there will be a couple of nice charms anyway.