Marmight - I'm sorry to hear how ungracious some are, although like others have said they may not realize the work involved.
MaggieMay - how horrible. There is no explaining some people's morals. I had an inkling of this with my mother's second husband. We had the same situation with mother passing away first, and her husband staying on in her house on his own. He was starting with dementia, and his two sons were of questionable morals and finances. We made sure all the jewellery and china from Mum were packed up, but left everything else. No point taking chances. Months later when it was decided husband needed to go into care, my sister (who was executive and lived close by) did invite them to take some furniture and household goods rather than having to sell them. It all worked out in the end.
I still occasionally let my sister know how much I appreciated all she did during my mother's illness and afterwards, helping place her husband in care and finishing off the estate. What a lot of work.
Things you find stressful that other people don't notice.
New house and a sloping garden