[Mikeb85]

You don't get it. The whole point of laundering money is so the criminals can spend it on legitimate things, like cars, houses, and burgers (or tacos?).

You don't launder money to buy more illegal things, you launder money to buy things legally.

Edit - the easiest way to launder money is actually to run a legit business (like a restaurant), and create fake transactions that are settled in cash. And of course, business men will take that cash to the bank. Now how is the bank going to determine if that cash coming in is from a real business, a fake one, if it's drug money, etc...? Because plenty of real businesses, especially in places like Mexico, do most of their business in cash...