Did we really eat so much healthier in the past. Yes, less obese people, but that was because a shortage of food and far more physical type work which worked off calories.
Sunday brekkie when I was a child (40's and 50's), was often white bread soaked in egg and fried in fat, then covered in white sugar. Loved it.....Also my Mum for a treat would make me a sugar sandwich, white break, butter and sugar!!!
My Mum worked part-time, but always cooked a meal for us in the evening, always contained meat, potatoes and one vegetable. Tinned (very sugary) fruit for dessert and things like Angel Delight ,etc.
Life was very much harder back then, My Mum would ensure that I had one piece of fruit each day, but would keep these in a bag that only she had access to. No fruit bowls left out on dining tables back then. I think there are far too many rose-tinted specs around when we talk about our own past.