If you were forced to choose, would you never use your brain or heart again? Personally, I would elect to not use my heart again. Sure, I will be all gloomy or even emotionless but in my opinion, that is much better than acting like a fool in the case of not having a brain. Three of my hobbies, video games, ice hockey, and reading all involves brain power so with the lack of a noggin, there would be no reason for me to live. Even if I did have a heart, I still could not enjoy what I love so depression will still be present either way.