Since I was young, I have seen any number of manufactured products based around chocolate and peanuts or peanut butter. And they have been OK.
But I never really understood the attraction.
Try this: Take some good peanuts. (Works with other nuts too, but start there.) Take some good chocolate chips; I recommend something darker than semi-sweet. (Hershey's Special Dark chips are surprisingly good for a Hershey product, and full-on dark may be too dark.) Mix about 50/50, to taste. Consume.
Now I understand.