Discussion about Dungeon (Dark Elves).

I don't understand why people try so hard to develop a Warlock as a pure warrior. Wouldn't it be easier to just play as a Warrior? No matter how well you develop a Warlock, it won't become a better warrior than any of the demons. So, it's interesting and curious, but nothing more. Seriously discussing this seems a bit illogical... Can you convince me otherwise?