How do you know these people aren't being replaced? Logically, their 'replacements' are not yet frail and landing on the floor all the time. Therefore, you do not meet them, because they are not calling ambulances, do not yet have or need carers, are not yet living in warden-controlled flats... Maybe some of them are using their community alarms properly, or using mobile/cordless phones to call for non-999 help. It's like how you don't meet the imminent mothers who have arranged to make their own way to hospital, the children who are NOT endangering life and limb doing stupid/illegal stuff, or the people who can figure out for themselves to take paracetamol for a headache. They exist, I promise. Unfortunately the nature of your job is that you only meet the other sort. I would argue that there aren't really that many *less* Gladyses, but that there are a few more Vicky Pollards and they're a lot more vocal.