Hey all! I just got a rMBP 2013 13" 8GB/128GB/i5 2.5gHz. I put my iPhoto and iTunes library on my external 1.5TB hard drive. Do you think I should encrypt it (for security/password reasons?) I have about 750gb used. How would the performance be affected? What about Aperture? I'm thinking it's probably not a good idea to encrypt, but also probably not a good idea to take around either.