I can't really say that I ever eat when I'm not hungry because I always feel hungry. I would say (rather) that I often eat when I'm not famished. That usually does not do good things for the way I feel following the said eating when not famished.
I also tend to feel more hungry than just hungry most of the time. I can eat what should be a satisfying meal but still feel like I didn't eat an hour later. Unless it's a high carb meal, in which case, I feel like I have diabetes for the next couple of hours (I actually do have diabetes but eating only makes me feel bad if I eat too many carbs).
So, if I eat too many carbs, I feel really terrible after. If I eat low carb, I feel super hungry all the time. If I eat just enough low carb to fill me up for 20 minutes, I will still be hungry in 20 minutes. And this will repeat itself over and over all day. I can only just eat small portions very often. I can't do this without exercising or I will gain a lot of weight. When I exercise, it makes me feel more hungry faster still.
So I eat, exercise, feel hungry, eat again, feel hungry again, exercise some more, feel hungry, eat a handful of walnuts or a spoon of Greek yogurt. on and on. Occasionally, I give in and eat like a portion of a candy bar or something and then it feel like absolute hell for 3 hours. Can't win. I can't eat, say, a banana or an apple, for example. Too much sugar. A normal person can enjoy a banana as a "healthy" snack to hold them over. If I eat a banana, I will feel like I ate a candy bar. Which means I will feel like hell. If I eat a small bag of chips, I will also feel like I ate a candy bar or a banana. If I eat a can of tuna with some light Miracle Whip and some relish, that will fill me up for a couple of hours without making me feel like I ate a candy bar. But how many cans of tuna can you eat in a day? Well, you're not supposed to eat tuna every day at all because of the mercury thing. You're supposed to eat it like 4 times a week, max
So I can eat tofu or something like that but tofu still has enough rapid carbs to make the diabetes feeling happen. If I take metformin and eat tofu, it helps but my diabetes is not bad enough to where I actually need metformin to eat small amounts. So if I take a metformin and eat a low carb meal, it will actually cause me to have a low blood sugar episode. Especially if I exercise within the next 3-4 hours. Which I have to exercise eventually or I will gain weight. Which will not be good for my diabetes because being overweight and diabetic is even worse than being diabetic in the first place.