80s-90s kid in America. No dessert unless we cleared our vegetables (or sometimes the entire plate). Dinner times normally had healthy enough home cooked meals (stir fries, spaghetti with sauce, roast chicken legs, stuff like carrot sticks and sliced cucumbers for the phase when we didn't like any cooked vegetables). We ate together at a table in the kitchen, or in the dining room. It was only as a teenager, when our schedules got crazy, that we ate more in front of the television.
Lunch as a little kid was a peanut butter and grape jelly sandwich on white bread (lots of added sugars). Or a salami and cheese sandwich. As a teenager, I went through a badly-thought-out vegetarian phase, and ate tater tots every day from the school cafeteria. Our breakfast was almost always a sugary cereal (Coco Pops, the technicolour Froot Loops, cinnamon toast crunch, golden Graham's, instant flavoured oatmeal). On the weekends, there was sometimes enough time to have something like pancakes or bacon and eggs instead. I had arguments with my mother over an acceptable number of cookies. I hated almost all fruit.
Drinks with meals were always fruit juice, milk, or (as a teen) soda pop. Same story if we went out to eat: soda, especially, was served in a huge cup and constantly topped up a la TGI's in the UK. As teens, my brother and I used to be able to split a 24-pack of 12-oz cans of normal Coke between us, and have it cleared within a few days. Even now, drinking water with my meal is a conscious rather than a reflexive decision.
I would love to have unlimited snacky snacks in my house, and have seen the literature supporting that approach, but my DDs both have nervous breakdowns if I bring a sugary cereal into the house and then try to limit its intake to only breakfast. When we have big tubs of chocolate in the house from Halloween and Christmas, there is a constant cycle of binge (me) and arguments about getting more (them). I feel unable to give them chocolate advent calendars because they'd tear through all of the doors in a single day. I would bring more Nutella and crisps and biscoff and chocolate bars and crisps into the house except there's no "off" switch on any of us when it comes to these things.
So, we rarely buy soda except for birthdays or the occasional random weekend. I pass over the sugary cereals and go for Weetabix and porridge oats, and let them add a bit of honey or a syrup. My DDs like fruit, so if they're hungry between meals, I send them to the fruit bowl.
I am overweight but not yet BMI-obese. My husband has been overweight in his 20s but managed to return to a healthy weight and keep it there through eating a bit more healthfully and exercising. My 7 year old DD is a very high percentile for weight, compared with her height, and it shows during periods when her physical activity slows down (such as this winter). The three year old DD appears to be in proportion. We are all on the tall side.