I understand what you mean there Squealey, once bitten twice shy, as the saying goes.
I feel the same about the RSPCA. here's why. When I was eight years old I spent an age trying to catch a blackbird with a broken wing, when I finaly caught it I took it to the RSPCA, they told me it was a wild animal and there was no point in looking after it as it would never fly again so they destroyed it.
When I was 15 I got a fox cub from some guys, the parents had both been killed, I took it to the RSPCA to ask how best to feed it etc, they took it of me saying it was a wild animal, had mange, and they destroyed it.
In my twenties a dog was hit by a car in the road across from my house and the driver drove on. A number of people, gathered round it, and a woman covered it with a blanket, until "help" arrived in the form of an RSPCA inspector, He stuck it with a needle about 6" long in it's chest, and literally threw it in the back of his van without hardly a word to anyone there.