The following infographic tries to answer that question, and it could go either way.
Some of the benefits of pens include:
- better reading comprehension,
- more effective memory recall,
- sharpened critical thinking, and
- increased creativity.
But keyboard, and the electronic devices they are attached to, have their own positive points:
- ease of sharing, and
- indexing & organization.
Really, though, it all comes down to how you want to be equipped when the zombie apocalypse sweeps the world: a pen, which is only good as a short range stabbing weapon, or a keyboard which might make a decent club?
The choice is up to you.