Green have you ever spent considerable time on a ward with elderly and dementia patients? They call for staff an incredible amount of times, often with no need of medical help. There are constant calls for toiletting when they don't need to go/don't go, there are calls for things they don't have with them, there are patients trying to do a runner, patients trying to take their own cannulas out, patients who cannot get up trying to get themselves out of bed, patients wandering around in mischief (like a dear old lady stealing things,pestering other patients, pressing buttons etc etc, there are patients telling you to fuck off, patients having a go at you, patients who insist there is a giant wasp in the bay, patients who want to know if you've let the horses out, patients who think they haven't been given their meds that they actually took 30 minutes ago, patients who become incredibly fussy with food, patients who think someone is staring at them funny, patients who keep forgetting why they are in hospital and are getting ready to leave and asking for a taxi every hour, patients who throw their pad on the floor, etc etc aswell as the standard scared elderly patient who is in tears and wants a hand to hold, patients who are tired and have had a disturbed night due to the behaviours of other patients. And that's all on top of the general medical, care, cleaning and paperwork.
It's not an easy job at all. It is nigh on impossible to be there constantly for everything. As sad as that is and may seem, when a patient is calling you every five minutes for a horse, something they don't need or don't really want then what do you do? It would take immense staffing levels to keep every patient constantly happy. Staff try as best they can, they really do (most!) but it's very different looking from the outside in compared to the reality of working it.
There are also patients who won't 'make a fuss' and will not let anyone know if they can't reach their drink etc. There are also those who say they haven't eaten when they have or they've refused what they were served (and ordered in the first place).
It really isn't a simple situation