I think you’ll find that these people who you are criticizing, are very much under paid and over worked. Do you think Nurses have much time between shifts to go to the shops, buy healthy fresh fruit and veg, prepare a meal and then go for a jog around the block to burn off any excess (let alone afford a gym membership)? I think you’ll find that most shift workers fashion similar physiques and that a frozen pizza from the freezer is their only option most of the time.
When Nurses sign up to become Nurses, they sign up because they have a burning desire to care for people. They’re all lovely people under the surface and I think you’ll find a lot of them are unhappy because they are treated so unfairly. The facts are that Nurses are directly responsible for people’s lives, but get paid far less than Policemen and even Teachers.
We will all need a nurse at some point. I think labeling them fat, lazy witches is rather harsh and in my opinion, they need our support rather than our criticism.