While I see your point of "modern world does make it very easy to be fat", it is false. I might as well say that the modern world of rush and stress and work makes me skip meals. Is that technically true? Yes it is. Is it still my fault? Yes it is. I KNOW I have to get certain amount of calories in daily or I lose more weight. If I fail to do so it is MY fault and all the excuses like work and shit are just that, excuses. I for one don't understand how the fats can get the way they are when I struggle with being underweight and I have all the money to buy as much food as I want to. So ultimately, while today's world does enable unhealthy behaviour, it is the individual's hands in the end.