I don’t find the dichotomy of ‘good’ and ‘bad’ food particularly helpful, and get especially irritated by women (it is almost always women) who jabber on about ‘sinful’ food. Even concepts of ‘healthy’ get completely turned on their head for people with non-standard pancreatic configurations like us. I remember thinking the food in the hospital was pretty healthy, and couldn’t figure out why my BG was always sky-high after ‘healthy’ hospital meals of wholewheat toast and fruit.
There are no diabetes-unfriendly foods, it all depends on the portion size. It’s important for me to remember this because feeling deprived or restricted makes it more tempting to fall off the bandwagon. I can eat a little bit of anything and everything and it won’t spike me. But a little really means a little, like half a teaspoon of dessert, or a small bite of donut (two small bites if it is a truly good donut). And if I need to bolus for it, well I’ll bolus for it - after all, I need to bolus even for no-carb meals. I would never consider it ‘cheating’ to eat a cheeseburger or pizza but I eat them in controlled ways. A McDonald’s cheeseburger actually only counts as 15g carb for me because I throw away the bottom half of the bun. I don’t know about you but 15g is pretty low-carb and some people might not even need to bolus for that. Last week I had some Domino’s thin-crust pizza which was a surprising 17g carb per slice - ok they were quite small slices but they did hit that glorious P-spot that only pizza can!
Actually I’m a bit bothered by your phrase ‘something delicious and bad for you’ - delicious things do not need to be bad for you. Conversely, there are things which the non-D world would consider ‘healthy’ and ‘good for you’ which to me are delicious but unfortunately, bad from from blood-sugar management point of view. I am thinking of fruit here, which I love, but which I now have to bolus for. I have seen some ultra low-carb advocates ruling out tomatoes, onions and peppers as being ‘bad’ as they are too high in carbs. I could not live my life without tomatoes or onions so according to this point of view, I am ‘cheating’ by eating these ‘bad’ foods.