OP here personally I dump Intelligence, since only 2 classes uses it as their main stat and one of those 2 classes aren't even in BG3.
Not sure what you mean, the wizard class is in BG3 and it does use intelligence as primary stat. But I think the stat that isn't a primary for any class is constitution...it will often be a secondary stat for strength based classes but if you play as a caster or ranged character you don't need constitution. Over the course of the game 12 hp more or less won't make a huge difference.
You do actually. Constitution is used for hp and for concentration checks. Even as a sorcerer or wizard, you do need some buffer for your health. You won't be doing any good to your party if you drop unconscious in round 1.
P.S. I assume our elf friend meant that he dumps intelligence when that stat is not a primary stat for the class.
