I find it incredible how so many here on TERB (and yes, I'm specifically thinking of you, fuji, as well as the OP) seem to relish bashing overweight or obese people.
I will make several points here:
(1) Yes, it is true that obesity has increased around the world due to many factors, including a change to a sedentary lifestyle and the increased availability of high-calorie fast foods. However, it is also the case that certain individuals also have a genetic propensity for weight gain, and for others experiences in early childhood can also contribute to obesity. In any case, obesity is a health issue and that's how I would like to think of it.
(2) Following up on point (1), just because someone is obese does not necessarily imply lack of control, nor does it imply that person is lazy, unkempt or filthy. There are many obese people (including those who I know personally) who are perfectly hygienic, and there are non-obese people who I've known who are disgustingly unhygienic.
(3) What difference does it make to any of you whether or not an SP sees overweight or obese clients? It is the SP's business which clients she is willing to see, and I do not see any reason why we should question this.
(4) As a follow-up to all the points above, IMHO I believe that bashing or demeaning obese people, or any other people based on their personal appearance, reflects more on the character (or lack thereof) of those doing the bashing than on those who are the targets of the bashing. If I had to choose between who is more worthy of contempt -- an obese person or the OP -- the OP would win hands down. Likewise with fuji for his comments on obese people.
Disclaimer: I am not obese or overweight myself -- as the few of you on TERB who have met me in real life can attest to.