I thought about this option too, it would be fun to watch the fats die off. There were two problems I couldn't get a solution to though. The first problem is that we already have a lot of fats eating themselves to death, with the worst kinds of food you can imagine. Rather than just dying off, they end up overburdening our healthcare system and humans then have to subsidize their obesity, either through health care insurance costs or by the taxpayer funded health care system. The second problem is the proliferation of new fats. If children continue to see overeating and eating junk food as normal then they will grow up to be fat adults. We need to get our views on obesity into the mainstream consciousness.