It isnt just rings. There are carpenter and leatherworker necklaces earings and bracelets too. At some level ranges they make some/all of the jewelry for crafters or adventurers too. Then again, at certain levels the best gathering stuff is from goldsmith too. They tried to mix it up so each crafting class would be useful.

And ill +1 Stepjams note about fishing. If you arent enjoying it, not doing it wont put you at a huge disadvantage. There are a select few ALC recipes, and of course sea food CUL ones, that require fish but if you absolutely need one you can usually buy it from the market. I eventually leveled it just for completions sake, but it was last to get done by a LONG stretch.