Martins don't make your fingers bleed if you have a friend who has the skills to file nut slots down to where they should be.

Keep in mind that Martin sells to a lot of bluegrass rhythm players, and they often want an action that most people would consider painfully high. They hammer the guitar hard enough that it'd buzz if the action were what most people would consider normal. I think Martin's philosophy is that it's a lot easier to lower the action at the nut than to raise it (the latter usually requires a new nut), so they ship with a high action.

I think.

Peter.