I was depressed long before I was obese 
I actually said, to DH earlier, "Even if I was thin, I would still be bloody unhappy" - my weight has nothing to do with it.
Fat people are just the next in line to blame. It was drinkers, then smokers, and it's illegal to harass gay people, so they pick on the fat people. You cannot shout racial or homophobic or religiously intolerant abuse at someone anymore, it's illegal, but "you fat cow" and similar are seen as hilarious...
Just think, if everyone in the country stopped drinking alcohol, stopped smoking, and only ate organic fresh fruit and veg, and exercised regularly, and took all their vitamins, and drank only pure mountain spring water - we'd all still die, the hospitals would still be full, and then who would they blame?
Fat people, and smokers, and drinkers, and people who do extreme sports, and people who reproduce, and people with genetic disposition to various diseases pay their NI and/or health insurance, and because of the way the NHS is set up, they are just as entitled to care as anyone else would be.
If they refuse to treat smokers/drinkers/the obese are they going to refund all their NI contributions too? and take all the tax from cigarettes and alcohol? You know, the billions a year that pour into the government coffers unremarked. The one tax source they can increase at will because complainants are told "tough shit - quit if you don't like it" 
And what is all the fucking obsession with this mystic "Quality of Life"? people are happiest when bloody left alone to get on with their lives, and not fucking preached at by the bloody politicians in desperate need of a pre-election soundbite or the media anxious about sales figures.
For every article or blog or tv show clip giving one view, you can always find one with the opposing view, and all the bombardment does is make everyone feel totally bloody inadequate.
Take for example breast vs bottle, or working/stay home or any of the other debates that make mothers hate themselves - how many of us have, at some point, been made to feel bad/wrong/small because we were "Doing It Wrong" ?
It's the same with everything - Dawn French is "bubbly" and "larger than life", Susan Boyle is the butt of constant "ugly" jokes, Nicole Richie is "worryingly thin", Victoria Beckham lives on lettuce, and some vapid model with a newborn is "back in her bikini body" and who gives a flying FUCK?
It is so not important, and nobody, but nobody should ever be made to feel like they have less worth than anyone else because of any aspect of their physical appearance and/or ability.
(Sorry, got a bit carried away there
just having "one of those days")