Something I wish I knew about crafting before starting my quest to all DoH to 60 is that if you want to make money off it, there's no half-assing. You either go all the way or you don't.
You somehow survive courier leves and Ixali quests sending you all over the world and the daily temptation of a mogglicide for god knows how many weeks and get to 60 (with them all - again, no half-assing). Your first job is to make a set of gear so you have a set of gear that allows you to make the set of gear that allows you to make the set of gear you need to make anything useful, profitable or interesting. And then meld it. Oh, the melding... Eight, maybe nine digits of gil worth of materia, 80% of them lost in the process because there isn't a chance to fail overmelding, there's a chance to succeed.
In between all that you're farming things you need to buy most of those 4 tomes (per profession) with the recipes for - again - anything useful, profitable or interesting. Mostly collectables for scrips, or how you'll discover interesting podcasts and realize the power of crafting macros in the process of saving your sanity.
And of course, you also have DoL professions because it fits into the all-or-nothing thing. Unspoiled nodes, please look forward to them.
Or you can do what I did and get to max level just to settle for having the ability of making your own glamour crystals, melding and repairing your own gear, and gathering your own maps. Considering I've spent most of my time with XIV messing with professions instead of saving the world and glamouring, I'd say it's not quite worth it for these alone.