I'm just perplexed by the idea that dessert is considered a standard course for an everyday family meal. In my family, and all my friends' families, dessert was reserved for special occasions (whether at home or at a restaurant) - not a daily thing. Do/did most families serve dessert on a daily basis? I can see how that could interfere with not only children's digestion, but adults' as well.
Unless there is an alcohol component to the dessert in question, I don't see a reason to restrict it to adults, but just the idea of making dessert plus the meal every day would have put my mother in fits.
I was born in the mid-60's. We didn't have dessert every night, but it wasn't an uncommon thing. Icecream, some fresh fruit, brownies, pudding or jello were all typical week day desserts and we probably had them a few times a week.
Sunday dinner always had some type of dessert,typically a cobbler, pie or cake. Left overs might be eaten later in the week.
With my family now, I probably make some type of dessert weekly, sometimes more often. For the 4th I made a blueberry crumble with homemade peach ice cream. Yesterday I we had fresh strawberries drizzled with balsamic vinegar. DS is wanting strawberry icebox pie so I've already bought the ingredients and will probably make it Wednesday night. I also have some left over blueberries that are starting to go bad so I'll probably make a 3 berry sorbet tomorrow and put in the freezer.
Not sure how dessert would impact digestion. If not kept to moderation, it could be increase caloric intake, but we believe everything in moderation. I'd rather have my kids eating a bowl of ice cream than munching on chips or cookies throughout the day.