Fallout 3 is disappointing. The main plot revolves around the Enclave, which with the circumstances involved, I DO NOT SEE how they are bad-guys.
"Oh lordy! the USA government took over our water-treatment plant! I will kill myself to keep this sewage processing facility out of the hands of the government in this dire, inhospitible wasteland on the verge of ruin by super-mutants, raiders, dangerous mutated wildlife and The Republic of Dave!"
That's because the Enclave is anti-Radioactive Mutant, and they see everyone exposed to radition as mutants who need to die. Since you are exposed to this radition, you are a mutant, and thus they hate you. If you didn't want to die, convince the BoS woman to die for you.
There is an alternate ending where you can go out and actually work with the Enclave, and posion the water supply, in order to destroy all Mutantkind. You still die, but you are dying for to save the United States!
You know what we need, some way for semi-fans of
The Elder Scrolls: Fallout to actually talk to each other and spread tips. I had some fun with TES: Fallout, and I'm not going to go out and let others scream about how it's not fun. Believe me, I've seen far worse games out there.
I don't view The Elder Scrolls: Fallout as a sequel to FO2, and I don't think anyone should. It is its own independent game, and it is a semi-good independent game.