Your first couple of comments made me think of old episode of the X-files I watched last night.  This somewhat plain (though thin) guy reached out to fatties (like this particular ham) in a chat room for Big Women (keep in mind this was filmed in the 90s so the BBW bullshit hadn't really picked up).  The guy essentially had some weird ass genetic mutation that required him to devour adipose tissue in order to survive.  He also was similar to a scorpion in the manner of releasing digestive juices prior to consuming his victim. He preyed on fatties (as stated in the show) because they were insecure had the most adipose tissue for his physical needs.  He claimed he wasn't a monster.  He gave the fatties what they wanted (emotional connection) while they gave him what he needed to survive (their vast fatness).  It was possible for him to consume any human, but fatties were the easiest and biggest payout. Of course, the fatties shown on the screen would be "small" fats by today's standards. If only there were actual people out there like this guy.  They would be the best way to take fatties out of the gene pool.  So long as they stick to fatties, they certainly would improve society.