I only smith when I'm playing a weaponsmith. For other characters, by the time I manage to find all of the necessary gear and train the skill up to a respectable level, I've finished the game already. Mining is also really, really tedious.
With a weaponsmith, on the other hand, once you find a forge and hit level 6, you can use junk spears from spear traps and all of the other random useless weapons and armor you find to make ingots, so you don't have to worry about mining, and can get a good smithing skill quite quickly. In this case, smithing can be pretty sweet because you can maybe triple your DV/PV at a time when it is still pretty low.
Hoping to win with every class, doomed. Archer, Barbarian, Bard, Beastfighter, Druid, Elementalist, Farmer, Fighter, Monk, and ULE Priest down.