You have to value the difference of WANTS and NEEDS. You can save lots of money if you know how to budget. For some reason i invest my money to bitcoins and i think this is a good idea 
BTC will have something similar at some point. Probably more likely years off when a lot more BTC transactions are taking place and a summary of what you've spent money on in the last 30 days using BTC would be more useful since it would include most of someone's expenses.