Not if it's a fault that can't be changed, or at least not easily.
I'm short, too, and I've learned to accept that, just as I've learned to accept the fact that some of my friends have more people posting "happy birthday" on their wall than I do.
Can't be changed? Are you sure you aren't making up excuses for yourself? If you didn't believe people skills were innate and unlearnable, would you have to face the fact that you may be simply lazy in that regard, or that you're clinging to an unfriendly personality because you feel it makes you more of a techy hacker archetype?
I'm short, too, and I've learned to accept that, just as I've learned to accept the fact that some of my friends have more people posting "happy birthday" on their wall than I do.