Exactly. You need to keep really good control over your code structure to avoid callback hell. And again at one point you will end up in a situation where you w

Exactly. You need to keep really good control over your code structure to avoid callback hell. And again at one point you will end up in a situation where you will need to declare functions inside a main function, etc. That's why I noted that I've never seen a callback implementation that is more readable than promises.