I'm a huge bacon fan, but lets be honest, it very rarely plays a staring role. If I absolutely had to, I could go through the rest of my life without it.
Chocolate, on the other hand, is critical to too many foods. I don't have much of a a sweet-tooth, but to try and live without ever having something as simple as chocolate ice cream, a brownie, or a chocolate chip cookie again...the possibilities for sweet foods have just been drastically reduced.