Why is Crafting still in the game?

[Felis]

Last time I made them it cost 800 gil to make 3. Made my own shark oils these are stupidly expensive if you dont make your own. They have a 100% hq rate they sold for 1000 each. I was making 2200 gil a synth profit.

You aren't hard core enough if you don't want to preform at max dps, I sell these potions pretty well.

The only expensive about the shark oil are the silver sharks. It take time to catch them (you need first to catch a HQ living bait before you can catch a silver shark with it). More time if you don't have a fisher ready.
The hammerhead sharks are easy to catch at the silver bazaar.