I don't know what I'll do AFTER the shut down, but BEFORE IT I intend to rid the workd of all that is evil; I will kill the raiders, Vault City (except slaves), the Enclave, 3 of the 4 families (I happen to LIKE the WRIGHTS), the Slavers Union, and any evil in between them.
Then, when the Gods have damned me to Oblivion, I can spit in their eyes and die a Hero of the Wastes, while the rest of the fools bash each other into eternity for nothing.