It wasn't until I worked for a 3rd tier ambulance service, where intra-facility transfers and ALS monitered Dialysis transport were the commpanys bread and butter, that I discovered the other side and I honestly felt more than a little ashamed.
Even for the dialysis patient, few look past the diagnosis of "renal failure" to see what actually caused the patient to need dialysis. Some don't realize the patient may not have had any kidney disease but rather they may have had some catastrophic event such as a cardiac arrest or a trauma which initiated the events that severely damaged their kidneys.
Not all "saves" turn out perfectly even if they are able to walk out of the hospital. But again, some EMT(P)s fail to acknowledge them as worthy patients or even as people on some ambulances if they are no long having a situation that stimulates the adrenaline.