system
Given the following post, respond as if you're commenting on Reddit:
human
[Fallout] Why did the resource wars even happen?

We see that the ever dwindling supply of oil lead to a break out of wars, eventually leading to the nuclear apocalypse but why were they fighting over oil if everything they used was nuclear powered? 

For example, T-51b power armour can last 10000 years due to it's fusion reactor. Why didn't they just adapt to fusion?
gpt
The wars weren't just fought for oil, they were fought for ALL major resources. Even a fusion reactor is no good if you don't have the uranium you need to run it. Plus, the old staples like arable farm land, clean water, sugar cane and plutonium for the Nuka-Cola. Hell, even just living space would be at a premium. 

It's also important to note that fusion tech didn't exist for long before the war. The T-51b was cutting edge tech manufactured just before the war went nuclear and even the fusion powered cars like the Corvega were still being advertised as brand new. Maybe if the war had been delayed a few years the fusion tech could have saved the world but it was too little, too late.