There's not a -ton- of use for Raw. Your scaling stats are strength, dex, int, and faith. These are your greatswords/axes/hammers, for strength, and straight/curved swords and spears for dex. They can then be upgrades either way to go for magic or divine enhancements, or just regular, so you can cover your 4 scaling stats.
The non-scaling stats are vitality, endurance, attunement, and resistance. The ONLY time that raw weapons would be decent, is if you're building your character based solely on one of these stats. But all of these basically cap at 40-50, except Endurance keeps adding weight capacity. But, the only time you need a lot of endurance is when you're using heavy armor, greatshield, and greatsword - which means you need strength, making strength your big stat.
Even when you DO have poor weapon scaling, then you get your fire or lightning weapons, which also do not scale but have extra elemental damage that bypasses regular defense.
(I'd even say that elemental weapons are only good for dex builds. Strength builds have strong weapons that scale off a strong attribute, so those ultra greatswords get incredible damage when you count scaling - dex also scales, but the weapon's base damage is lower so 'damage increases with dex' is lower.)