Without commenting on the goodness/badness of deriving happiness out of a sport car... If you can buy the thing in cash, out of pocket, without depleting more

Without commenting on the goodness/badness of deriving happiness out of a sport car... If you can buy the thing in cash, out of pocket, without depleting more than half of your liquid savings... sure, why not. If on the other hand you buy on credit, you are making a commitment against future earnings, that are in no way guaranteed to match or surpass current earnings. More over, if you make and habit of indulging in anything you happen to fancy, you have no guarantee that other frivolous expenses won't come before you actually finish paying this one. However its other (many) flaws that's one point that Kiyosaki's "Rich dad, poor dad" gets absolutely right: A large income is irrelevant if you inflate your lifestyle even more.