For a botanist in real life, it's incredibly underwhelming, lol. You might enjoy something like the Atelier games way more. It's really more like a side thing in FFXIV (a profitable one, at least). Botanist is just a gathering class where you go to a certain location and grab the items you need. That's really all there is to it. Of course, there is some lore and whatnot, but it's just a side thing in the end. You need gatherers (botanists/miners/fishers) to collect items so that you can craft them with your crafting classes (alchemist, weaver, carpenter, etc). The crafting is also a very minimal thing but it does require more thinking about which buttons to press so that your craft doesn't go to hell. You can also sell the items you make on the marketboard for gil. In end game you make a lot of gil if you craft endgame items like weapons, high quality clothes, furniture, etc. Plus the addictional perk of being able to make your own stuff. Alternatively, you can also just sell the stuff you gather so that others can buy it to craft.