Unless you plan to never succeed at a charisma roll, yes you do. The game is absolutely filled with charisma checks. You can argue all you want about the potential merit of outcomes from failing rolls, I do NOT give a flip, I do NOT plan on failing every roll...in face I plan to give myself the best chance at succeeding. Really unhelpful topic. Charisma is *the* singe most helpful stat outside of combat and if you pick your class right is can also be the single most helpful combat stat for you as well.
I think I'll stick with the F5/F9 stat instead
Usefulness of that is VERY limited. You can try to reload all day if you don't have charisma or at least some proficiencies in speech skills, you'll take a very long time to pass something like a 20 check, and if the game has checks of 25(as D&D does), even if rare, those could be outright impossible for you to pass. But the high checks have the strongest potential outcomes...passing those might be necessary to avoiding some strong consequences or talking Lae'zel into consuming a couple extra tadpoles instead of stabbing you and increasing the efficiency of your party.
