This is exactly why obesity is a thing. We are all wired to some extent to eat whenever food is available. It's a survival thing. But food is plentiful and easily available at all times. That would be bad enough. What's worse is much of it is specifically designed to be addictive.
Sedentary people definitely don't need more than one meal a day to survive. It's trivially easy to satisfy daily calorific and nutritional requirements in a single sitting. There are still a lot of people who say breakfast is the most important meal of the day. It is if you are going out to do 4 hours of manual labour in the morning before lunch. Not so much if you only cycle a few miles to work then sit down (and that's already more exercise than most do).
However, I do think there is a difference in how people react to fasting. In particular I think fasting is better for men than for women. I've been fasting regularly for more than 10 years at this point and it's great. But all women I've known to try it have had problems with it.
Sedentary people definitely don't need more than one meal a day to survive. It's trivially easy to satisfy daily calorific and nutritional requirements in a single sitting. There are still a lot of people who say breakfast is the most important meal of the day. It is if you are going out to do 4 hours of manual labour in the morning before lunch. Not so much if you only cycle a few miles to work then sit down (and that's already more exercise than most do).
However, I do think there is a difference in how people react to fasting. In particular I think fasting is better for men than for women. I've been fasting regularly for more than 10 years at this point and it's great. But all women I've known to try it have had problems with it.