Hi, I think everyone has a right to their own opinion.
I hope you aren't generalizing all overweight people. May I ask if you've ever had a serious weight problem? When I say serious, I mean over 150lbs overweight? Have you ever had an eating disorder that has pushed you to the brink of death? I wonder if you were born overweight (13lbs) and remained that way throughout elementary, middle school and high school being constantly tormented by peers?
Do you have parents that are very overweight, and grandparents on both sides that are obese?
It's not always as simple as you think. Telling an obese person to "just get it together and loose weight is like telling someone with anorexia to just eat."
I guess my ranting comes down to this, after reading the sentence below from your post I was very offended. Some people would think themselves lucky to only be 70lbs overweight.
"I've had clients who ate garbage for years and were so fat and they lost 70 pounds, 40 pounds, 30 pounds"