I think MrsDV hits the nail on the head, as so often.
I had an operation about 18 mos ago which failed and I had to be re-admitted as an emergency case. Now, most of the staff I saw were fine: every single nurse and HCA on the ward. They smiled, cared, and even remembered who I was when I was re-admitted, which I was dead impressed by as they must get so much traffic.
But, I now have to have that op again on the other side. And I must admit, my dominant memories are now having to go and argue with 3 different doctors when I was throwing up with pain, just to be re-admitted to the hospital (they thought I was exaggerating a bit of post-op pain.... till they saw the scans!!).
This is unfair on those HCP who were great. But I will go into hospital again thinking 'What if this all goes wrong again, are you going to blow me off?'
Equally, I try as a patient to be aware of HCP's experiences. For example, the nurse who bawled into my face 'ultrasound scan now, that means COLD JELLY' actually didn't offend me, because I just figured she dealt with lots of hard of hearing, older people. I try to be a 'good patient' as I'm aware they must have a rough time with some people.
It cuts both ways, and as with so much in life, a little common sense and good will helps a lot......