I don't use it nearly enough

I am not sure but I certainly heard no "dong" (or sound of any kind) the times that I have used it. Sad really since the FA probably did not hear anything either. On LH in Y a FA came by and turned the light off and walked fast further down the aisle without asking me if I might have had a reason for pushing the button. In Y (which in my opinion is where one needs the button the most) it takes ages for the FA to come and bring one drinks or whatever.

In Business it at least works pretty quickly but then you get much more attention there so it is not really needed.

I must say I have difficulty understanding how someone could fly for ages and not use the button, and I certainly fail to see what is rude about using it.

Obviously the button was put there for people to be able to get the attention of the crew for bringing them drinks, snacks or helping them with other requests. That is what it is there for.

Furthermore, when I am in a window seat (and I almost always am) then I am certainly not going to do the very difficult movements required to get out of the seat. If you don't want me to use the button then either:
1) Remove it
OR
2) Built airplanes with space enough for one to move around.

And on a side note: as far as I am concerned the FA is primarily there to get me food and drinks. If the plane is really going to crash then the FA will die like everybody else...!

Getting back to my first sentence, I think I should slowly learn to use it more. That is the only way one can really benefit from the service offered in Y and max out on the airfare. So far I am way to polite/shy (or whatever) to use it often to get cola and water but I am hoping I will be able to change this gradually.