There is the saying, "What doesn't kill you, makes you stronger."

[Billy just couldn't overcome the Gatling gun, though, it had put too many holes in him... He almost thinks he can hear the chiming of the church bell that had been hanging above him until Peter's voice ends the phantom sound. What he says keeps Billy's mind on his own death rather than move away from it, but he tries not to show it and fixes his hat.]

The cows weren't the problem, it was a rich man up in Sacramento and his mercenaries.