I had this conversation with a friend just the day and I said yes, if my life depended on it. Likewise, if I were dead, I wouldn't be the least bit offended if it extended someone else's life. But if they're doing it for funsies, I'm going to give them a raging case of indigestion.
For a recent paper I did, I read upon cannibalism extensively. According to various people who've had to cannibalise others, i.e. the survives of the plane crash in the Andes human meat is most often described as tasting similar to beef. While others liken it to pork in taste and texture, hence the term 'long pig'.
Other fun facts:
The most calorie intensive part of the body are the brains. So if you're watching your waist line avoid 'em.
Rotting human meat was described as tasting like a really rank cheese. (that one grossed me out to no end)