You'd actually find it attractive if someone who was a multi millionaire, casually said ' I know darling your child has suffered a lot, struggles with their mental health and neurodiversity and is happy where they are, and I know it wouldn't make much of a difference to me, but out of principle I'm going to say no because I really fancy going on another cruise'
There's a huge difference between that and saying no because it would actually impact.your finances in a meaningful way.
Generosity of spirit is very important to me though - not necessarily financially, but in terms of effort and time. If someone has the time, or ability, or yes, finances to help someone they say they love, but they don't because it's too much effort, then I wouldn't want them in my life because I'd walk through fire for them.