I was born in the early 60s and I seem to have grown up in a different world from most of you, possibly because my family is Scottish. Every Thursday my dad would arrive home from work with fish and chips for our tea. At least once a week for tea my mum (who was working full-time as a teacher and therefore didn't have much time to cook during the week) would heat up pies she had bought from the butcher and serve them with homemade chips (cooked in lard/dripping) and baked beans or tinned pasta. On Mondays we'd have cold beef from Sunday's joint, usually with chips again. There were days when we had salad (cold meat or M&S quiche, lettuce, cucumber, tomato, salad cream, pickled beetroot) but often that came with chips as well, and failing that there were crisps.
And that was just the first course! We then always had bread, butter, jam, some sort of cake or chocolate biscuit and all washed down with tea (unsweetened, but full-fat milk).
In the course of the evening my mum and dad would usually pass round some sweets (they both have a very sweet tooth). We might be allowed half an apple each as well. I used to spend my pocket money on fruit because it was more of a treat than sweets!
We also had breakfast (boiled egg, buttered toast, coffee) and a hearty lunch. Biscuits and cake came out for visitors with the tea or coffee, if anyone dropped by mid-morning or afternoon. Plenty of convenience foods were in use (Angel Delight, Vesta meals, Spam, bought cakes and biscuits, frozen burgers).
It is a complete mystery to me how we weren't all spherical. My dad was a bit overweight, admittedly, but then he was doing a sedentary job and minimal exercise outside work. My mum was doing an active job teaching a Reception class and also fitting in all the housework. She didn't drive so walked a lot. My brother and I were at school and both slim, also walking a lot.
I think a big difference now is what people drink. More alcohol, more sweet milky coffee or other hot drinks, more sugary carbonated drinks, more artificially sweetened drinks. I know the latter are supposed to have no calories but I can't help feeling that they are not healthy.