Why wasn't the game designed like this?

[Shiyo]

Not to mention the "LF Armorer to make ____ with my mats" followed by "yeah ill make it, but it'll cost you a massive amount of Gil or I'm not doing it"

You would want people in your FC to have gathering/crafting leveled, so instead of recruiting people with ONLY battle jobs for end game dungeons/raids, you'd wanna recruit crafters and gatherers too. You'd also wanna make friends with them, like you'd make friends with healers or tanks or DPS. It creates a stronger community as well, because you can't cross-server craft and have to actually make friends, help people, and be nice/respectful, which isn't done very often in the duty finder and you can't really make friends with people you'll never see again.

I currently have friends and a FC where we all have different crafts and gathering jobs leveled, we all make stuff for each other for free and give each other mats for free. It's nice, we helped each other out leveling our crafts and now help each other gear our jobs.