A lot of how I am is an equal-and-opposite reaction to how I grew up: Credit card debt, struggle to pay all the bills, screening calls for creditors/collections. And these burdens were placed onto us kids through constant reminders of the "dire" situation.
It's a scarcity mindset that means they're never happy no matter how much they have. I've had to work hard to change that mindset in myself. I've also never carried a CC balance except for promo rates, and never missed a debt payment, because I saw the results of doing so.
It's also the result of a victim mindset. Even as a kid, I saw how their situation was a consequence of their choices--to own certain things, live in a certain place, etc.--and was frustrated by their refusal to change those choices. There was no sense of agency or efficacy. They wouldn't own that their situation was the result of their choices, that they could change those choices if they really wanted to, and that they just didn't really want to.
They also have a lot of stuff, which always drove me crazy and still does when I go back to visit. My dad is the type to buy a shirt at a thrift store because "it's only $5," but he has probably 200 $5 shirts. Do the math, Dad!
I of course love my family, and as I said, many of my successes are attributable to them in the sense that I developed a strong desire for something different. But the scarcity/victim mentality and negativity is emotionally draining to be around, and I'm always glad when I can come back to my own stable little bubble.