The only people who are experts on how easy or simple it is to lose weight, are the skinnies, those who never had to fight it. I should know; I used to be one and I had the same snotty attitude.
I had a high metabolism and could eat any thing and any amount of any thing I wanted, and it never showed. I had kids and those days were over. I eat better now than ever and exercise and still fight to not gain weight and lose it if I do.
I understand where you are coming from, and generally agree with you.........BUT.......
There are some of us skinnies that have the opposite problem, we are unable to gain no matter how well or poorly we eat. In October of ‘06 I was told to put on at least 20 pounds. I put on 6 within 6 weeks, which was a great start, or so I was told. I still weigh the same as I did then, more than a year later.
Many of us skinnies sympathize because of the opposite problem. Unfortunately there seem to be nearly as many who don’t understand a problem like mine as there are who don’t understand yours.