My parents have both been ill for some time. Mum died on 15th November this year so its still very fresh. She was 110 miles away. I did one weekend and one week each month. I am the eldest of 6 spread far and wide. It was hell until we forced the issue with social services and got her direct payments for care - Dad was too ill himself and needed to go for therapies and gym it was slowly killing him on top of the liver, heart and pancreas failure he was living with. We also had overnight help from Marie Curie nursing - they could only let us know the day before they could come that night - but it meant one of us didn't have to sit up with her by the bed. He got 22 hrs Direct payment support plus other allowances which meant he could pay a cleaner to come in every other week.
All in all it is doable at home BUT you need tight knit family - we still had rows and upsets but could move past it to an extent to deal with M&D, we couldn't all give the same time wise at least two teachers in there and also 3 of us with family of our own, the rest of us self employed so needing to work to pay bills etc. It was virtually impossible to work in the house when she was still mobile which she was until around 3 weeks before she died.
Having said that she died with the hands of 5 of us on her plus her husband and one of her sisters, it was comfortable and pain free, she faded. I would go like that to be honest. But we tried homes and she was upset, confused, neglected and half the time her clothes were inside out or back to front - others said that home was great...we didn't think so.
Death is hard, life is hard, caring for parents with dementia (or similar) is fucking hard, the system is not set up for it. You move from caring to palliative and suddenly funding is via someone else and that needs to be sorted, other services suddenly available when we needed them weeks ago bloody annoying.
If the patient is angry frustrated and scared its hard, if the illness makes them violent and restless its hard, they no longer know who you are and fear you its hard. There is no easy way really.