As most of you would hopefully agree, there is no person in the world who could survive the entirety of the storyline in a real life circumstance...and probably not very far at all to be honest, just based the sheer number of enemies and dangers. So...suspending disbelief and assuming that you just somehow replaced the Sole Survivor in Vault 111, how long would you make it before you were killed or succumbed to some kind of illness?
I would LIKE to think that I could maybe make it to Concord...if fortunes were in my favor and I didn't run into anything too daunting. Then I'd be immediately killed by either a Raider or our first Deathclaw friend.
In reality, I'd probably just blow my brains out with the 10mm after seeing how [censored] big those cockroaches are, never making it out of the Vault