Latest studies suggest obese women having a body mass index of more than 35 should not be given fertility treatment until they lose required weight.
The higher the body mass index (BMI), the lesser is the chances of women to get fertility treatment. If a woman is under 37 years of age then it would not be ideal to give her fertility treatment until her BMI is less than 30, according to the British Fertility Society.

This is irrespective of whether such treatment is funded by the NHS or privately

In addition the BFS recommends that underweight women should also address their weight before starting treatment.

note these are only recommendations for people considering IVF and are based on medical knowledge of healthy and successful outcomes to conception and pregnancy NOT on any entirely subjective disagreeable opinions such as those in the initial post