They are furious with me because we have politely declined their invitation to go on holiday with them at Xmas.
We would've been paying our own way. However, they are paying for my sister & her family to go with them, because it is such a struggle for my sister & family to be three people on a single salary. My BIL's salary is >15 times mine or my DP's, and until she decided to not go back to work some years ago, my sister's salary was > 10 times mine.
My parents have paid off my sister's university debt; they paid for her totally OTT social life and her taking twice as long as normal to finish a basic university degree; they paid for her entire (large, expensive) wedding; they paid for more than half her house; they buy new cars and give her their old one, free, every couple of years; they have recently bought her a fridge and a new washing machine; they buy all her and her son's clothes; they are paying for her son to go to expensive prep school and will pay for public school later... and to top it all, they do all my sister's food shopping!
I paid my own way through school and university on scholarships. I have paid for every single thing myself - holidays, food, clothes, rent - since I was 16. I live in a different country from them now, but was in the same city for 10 years, while they paid for whatever my sister wanted. We couldn't afford to have a wedding. My ds will go to the local government schools.
My parents explain this as "oh you are so much more independent than your sister, and you have the potential to do whatever you want, we're just trying to help her along so that she can have some of the wonderful experiences you've already had".... experiences that come directly from career choice and bloody hard work, paid for entirely by scholarships and research grants!