P.S. Chaos is good for a Dwarf, I agree. But lately, I've been disappointed with it; if you don't get education, you're unlikely to have a high spell power (I had only 10 at level 20 without artifacts or education, and there's not much you can do about it). At the same time, even with 5-7 spell power, Light is quite effective. And Divine Vengeance simply works wonders with minimal spell power. Damage over 1K is quite realistic.
Therefore, the conclusion is: Chaos is for a long game, while Light is more versatile and relevant at any time.
P.P.S. I don't play on random maps because they turn out to be terrible. On the original maps, you're unlikely to find several identical artifacts. Only if you loot one Utopia after another on the Outlands, but you know that you definitely won't be able to do that against a human player. I only bothered to collect a full Dragon set in a game against the computer, but I still didn't manage to do it.
Bow down and hear our cry,
Our earthly rulers falter,
Our people drift and die,
The walls of gold entomb us,
The swords of scorn divide,
Take not thy thunder from us,
Take away our pride.
G.K. Chesterton: English Hymnal