I own a chocolate factory. I would HEAVILY recommend NOT eating raw chocolate. I travel to some of the very best cocoa plantations in the world in countries such as Venezuela, Dominican Republic, Peru, Ecuador, Dominican Republic, Mexico, etc. etc. Cocoa is processed at the farm in conditions which are far from sanitary. I've watched dogs walk through cocoa (can you say: fecal coliform bacteria?). I've watched chickens walk through it and pidgins peck at it, and turkeys walk around it and EVERY time you have birds, you have salmonella bacteria.
Roasting is important to not only bring out the chocolate flavor but to kill all the nasties that came from the farm, from the cocoa processing center (or co-op), from the warehousing, from the shipping on the boat in open jute bags, from the transport on the semi to the chocolate factory in the US, etc. There are a million ways that even clean cocoa beans can get contaminated even if they left the farm in great condition. While I've made raw chocolate as an experiment for myself (and it is part of my job afterall), there is no way that I'd ever release the chocolate on a commercial basis without having each and every batch go through extensive microbial testing something that few raw chocolate companies do.