I think that poor people are more giving because they know what's its like to do without. I grew up very poor, then we had money, then I went back to poor, then came into money and now am back to "shoestringing" my life. I've done a lot to decrease my bills and there is a lot someone can do to cut certain bills. Especially a grocery bill. Mine is down to less than $20 a week for me to eat and still have enough to put something in the freezer that I never get around to cooking.
People who have never gone without, sometimes don't concieve of how someone might not have money for a basic necessity like food. No matter how much money I've had, I always have tried to be generous and giving. Of course I have this thing of, you don't have a job, you aren't trying to get a job, and you just blew your food stamps on junk food, and NOW you want a handout? Tough. I'll feed your kids, but you can go hungry and learn form that experiance. Then I have friends on public assistance that don't get enough, and I help them out. Those people will do odd jobs, or are disabled and do their best but just can't make ends meet.
So in general, the cost of living tends to increase for most people to the budget that their paycheck can support. In other words getting a better-paying job doesn't equate to being able to save money. It ends up that they spend it on stuff they couldn't afford before, and so still can't save money. And if that makes them happy, go for it, its your money, you earned it.
I am trying to save money, but I tend to fail misrably. Life has a habit of taking whatever I have saved. A pet needs a vet trip, the truck breaks down or blows a tire, a unexpected bill comes due... so I have the money to pay them rather than going berserk about NOT being able to.
Count your blessings, and enjoy your life, and always reach out to help when you can. You never know when you might need a hand yourself.
Wolfy