I've read a few horror stories about lost/stolen MBP's, and I understand that encrypting the storage would provide protection against personal information being extracted/misused. Before I take the plunge and encrypt my SSD, however, I want to understand what may be the consequences of encryption. Any impact on system performance? My primary concern is making my machine slower/sluggish. (Two cases here: I have a late '13 rMBP and a late '08 MBP, both with SSD) Any other impacts? Thanks for your thoughts.