Money on hand DOES NOT correlate with having good credit... if anything, it's the opposite.
I 'bought' my house at age 23, cosigned by my father and with a down payment provided by my uncle. I've made the payments myself. And 5.5 years later, I still can't get a credit card because I _only_ have one line of credit.
My uncle paid cash for his house and cars, and had something like half a million dollars in his bank account when he died. He deposited money (which earned interest!) with the DMV instead of paying for auto insurance. And I'd bet a hefty sum that his credit rating was much worse than mine is now.
The credit system is seriously screwed up. It rewards irresponsible spending. Every now and then I think about getting a credit card, but then get reminded why I hate that industry and want nothing to do with them.