
Normally I pick a class for what weapons it has available and what clothes it has available. What can I see my character defending themselves with? A sword? a Spear? A bow? Whatever that may be. That is normally the class I will pick. If my character is a big book worm and I don't even use weapons. I may go Arcanist just to get the book to read. I don't have to know magic. It is just an nice IC tool. I got whatever class fits with how my character would be in the world. Of course, don't forget that you can change your class at anytime. You can be able to use swords and bows at the same time. Not like you can only know one and have no clue about the other.
A class can be a good basis lore wise. But does not strictly make itself something to be followed. I know people who have played other classes from final fantasy games as well, such as pretending to be a blue/red mage. There is no actual class for that in the game. But they believed that is how their character would be and made their character fit those roles (They did not use the names though. Just played like one) One of my characters is a Novelist, the other is a Explorer. Those are not classes XD. But I just make do with what the game gives me to make them like a novelist and explorer.
A class can be a good basis lore wise. But does not strictly make itself something to be followed. I know people who have played other classes from final fantasy games as well, such as pretending to be a blue/red mage. There is no actual class for that in the game. But they believed that is how their character would be and made their character fit those roles (They did not use the names though. Just played like one) One of my characters is a Novelist, the other is a Explorer. Those are not classes XD. But I just make do with what the game gives me to make them like a novelist and explorer.