I am using this definition of wealth, which is the, ah, definition of wealth according to Mirriam-Webster.
wealth (wɛlθ)
n
1. (Economics) a large amount of money and valuable material possessions
2. (Economics) the state of being rich
3. a great profusion: a wealth of gifts.
4. (Economics) economics all goods and services with monetary, exchangeable, or productive value
Granted, I had high income before I started school, but used it to dig myself out of extreme poverty because my *family* was very poor. I have not had the opportunity to stack cash, as the kids say. That doesn't make me less wealthy - I just used it for things that other people usually don't. And isn't wealth relative? I feel like a rich bastard because I can pay my bills every month, have a college degree, don't need a cosigner for my student loans, have a three bedroom apartment and two used cars. I once bought a small house, and then sold it for a profit. Sure, I never go on vacations, most of my furniture is from Craigslist, my kids have a 3 year old Wii, my iPhone 4 has a shattered case and I'm not getting another one until my contract gives me one for free. Dude - I think it's rad that we always have electricity. Many (certainly not all) of my doctor peers think I'm broke.
Do edify me if I'm missing a key concept of wealth as it relates to higher income (and therefore, higher ability to purchase things and services). There's a lot about money that I admittedly don't understand.