My MIL tries to make her children's lives more "equal" by buying lots of things for SIL and her daughter and helping them/ taking them out lots because SIL's DH is rubbish with money, has debt from before they were together and doesn't earn as much as my DH (-SIL also buys things that she can't really afford). We, on the other hand, are careful with our money and only have a mortgage to deal with plus my DH is doing pretty well in his career.
On the other hand, my parents, myself, and also, oddly, MIL's parents, are all about giving the same to their children. Where do you stand on this one?