I totally understand @BlueLegume . I have written posts before about how the generation that were young in the late 1950s - mid 1970s were the most selfish and indulged ever, which has led to the crumbling of society since. And a total lack in their seeing more than their own fortunate lives.
Free love (sleeping around), cheap houses (3 x the salary was enough for a mortgage back then - not now), giving kids whisky soaked dummies to "help with their teething" (and shut them up), leaving kids in a car outside a pub and flinging them a bottle of lemonade and a bag of crisps is meant to be a funny anecdote etc etc
Now these people are annoyed to be the old ones, moaning about the pensions they got at 60 (we have to work till 67 at least to get it) and moaning that their £300 a year heating help has gone. Despite the fact that they have coined in an extra 7 years worth of pension (so £££s of pounds) so will have more than we ever will, sitting in houses my children will NEVER be able to afford on 3 x their salaries.
I am getting to the age myself of being classed as "elderly", but still have a mother to care for. She luckily isnt a moaner on the whole but oh the hell we had of getting help for dad because of her pride in thinking she was the best at doing everything. Until she was nearly on her knees and then all hell broke lose and we had to rally around at the expense of time with our kids trying to sort the mess out she had allowed by continually saying "no" to our help/advice/suggestions.
Probably not overly helpful, but I have learned to cut right back with my offers. It is hard when you have been trained to be at a person's whim, but it is freeing once you allow yourself the right NOT to offer help. And sod what siblings think. Everyone has their own lives, and often these elderly parents did faff all for their own parents, and never felt guilty!