# Why is sugar used in low-cost homemade rockets?

I was thinking about making a "rocket candy". It's relatively inexpensive rocket based on sugar and some oxidiser, mostly $\ce{KNO3}$.

The fuel is usually formed by heating the mix of both compounds so that the sugar sticks onto the potassium nitrate. They can also stick together by being dissolved and dried.

My question is, what makes sugar the best fuel? Paraffin or resin can be melted more easily and the oxidizer could be poured on them while they are hot. To me, that seems like a much better idea.

But there were many people before me and they have surely tried many things. So, what is the reason the sugar is more advised than paraffin or resin?