Listen to "Maybe" again. Pay attention to the lyrics. They could possibly be interpreted as being about The Overseer forcing you to leave Vault 13. "I Don't Want To Set The World On Fire" was the first choice for the music in Fallout 1. However, Interplay couldn't afford the rights to that song, and the developers settled on "Maybe."
Access to later game maps has revealed that Stupidity Is the Only Option. The Vault Dweller in Fallout 1 went in the only direction that did not have fresh water. If they went north, they would have hit Vault City with its hundreds of spare water chips: if they went east, they would have hit the Mojave and Lake Mead, which was untouched by the nukes. Instead they went south.
