Can we stop destroying the solo part of this game?

[Betelgeuzah]

yes really.

Says, once again, some level 50.

the selling of goods isn't, but the actual crafting and gathering is solo.

You gather and craft for the purpose of participating in the economy, possibly making a living.

It's all interconnected together. Even soloing in combat situation usually enables you to participate in the economy, so nothing in this game is truly "soloing" when it comes down to it.

That said, most new players have a problem because they don't realize this. You don't exist in a vacuum where monsters drop gil and items which you sell to NPC's as well as buy new equipment from NPC's and quests and craft and gather for yourself and nobody else. In a world where other players exist for the sake of existing like if you were living in New York where there's people around you but you are still pretty much alone, interacting only when absolutely necessary.