Artists in general hate asking for money. For a start how do you value it? It is certainly not related to how long it takes, or how much effort you put in. Great songs write fast.
Value maybe a function of scarcity… how many people on the face of this planet can create what you have created?
The unfortunate reality is that something is worth whatever people are prepared to pay. So when your music and films can be downloaded for free… What else do you have to offer?