Why is Crafting still in the game?

[Zumi]

Killing a boss 4 seconds faster is not even close to being useful. I can sell Mega-Potions of strength for 1k a piece, and it costs me nearly 4k to make 3. So I sell 3 for 3k, I lose 1k. All other potions sell for less than 300gil a piece and cost me 400+ to make. Why should I make potions when I lose money?

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.