Bitcoin is a social experiment, not a piece of software.
Bitcoin is sometimes described as 'antifragile'. Its antifragility doesn't come from lines of code. It comes from its users.
Bitcoin has survived because people believe in it and want it to survive. Bitcoin has survived because of the sweat and the guts and the grit of its devs and its users.
And if that happens, then Bitcoin hasn't failed us, we've failed Bitcoin.