Well, if I want to have the ability to roll a number with the range 1-20 instead of 3-18, the choice is obvious.
But in terms of proficiencies and reliability, I prefer the consistency of 3d6 for designing challenges and combat. I also often give weapons that deal 2d4 damage instead of 1d8 with the same rationale.
But as with all things, the success depends on the implementation.
Well, if I want to have the ability to roll a number with the range 1-20 instead of 3-18, the choice is obvious.
But in terms of proficiencies and reliability, I prefer the consistency of 3d6 for designing challenges and combat. I also often give weapons that deal 2d4 damage instead of 1d8 with the same rationale.
But as with all things, the success depends on the implementation.