Morbidly A Beast:
No one wants to feel hunger it’s terrible and stops you from getting Fat(ter) unless your uncomfortably full you can eat.
Depends on how you approach eating, I suppose.
You are correct in that eating when you aren't hungry is a good way to put on weight. Unfortunately, not everyone is able to do that for a variety of reasons.
For those who can't do that, the most important thing is what you eat and how big your appetite is.
Hunger doesn't stop you from getting fat. When used well, it is an effective tool for weight gain.