My GPs (mid 70s) are wealthy
My Dad has fuck all after 2 divorces and lives very frugally, doesn’t own a home any more, I think he’d prefer living in a cave with zero human interaction tbh
My Dads brother is wealthy, mostly because he’s a complete bastard who screws all his partners over and pleads poverty to my GPs all the time whilst simultaneously bragging every Christmas about all the properties and money he’s got 
I’m a PhD student so also renting and have very little, have 3 DCs one of whom is with me 100% of the time due to abusive ex having no contact (court ordered and DC has zero memory of them)
My GPs are very generous. They helped me with the cost of moving to University, when all my 10+ year old white goods gave up the ghost in the same month they replaced them for me (I didn’t ask, the delivery just turned up a few days later whilst I was hunting on freecycle), I never ask for anything from them but DSis is a total twat who kicked off because they wouldn’t give her 1k to buy the latest iPhone (she’s in her late 30s for goodness sake...) and has made similar “demands” over the years which has mortified my Dad and caused strain all around.
I often tell them that I hope there’s no more than a tenner in their account when they die, they’ve worked bloody hard, sacrificed a lot, paid extortionate care home fees for both of their mothers (Alzheimers), did a shit load of free childcare when I was little (whilst both working full time), still do it now they are retired for my cousins who are the same age as my DC.
But they do despair at the state of house buying and worry about me renting at my age (they were mortgage free by 21...)