Q1) "but what if the corporation is worthless? you don't get squat, right?"
A1) If the corporation has NO assets, you have the same result as a 'judgment proof' individual. Just another incentive to know who you are dealing with.
Q2) "what if i created a corporation and bought cars and houses with investors money and then ran it into the ground? could i just say, "yea, sue my corporation heh heh here's the assets" and drop a handful of change on the table and walk away?"
A2) Very unlikely. Before any creditor would let you buy ANYTHING in a corporate name (especially a new one or one with NO assets), they would make you sign a personal guarantee. That way YOU would be liable personally. Further, states have specific corporate laws that can be used in some cases to transfer the corporate debts to an individual who acts as you describe (acting as an 'alter ego' of the corporation). Further, you are forgetting.... any assets that you purchased using corporate funds (like the 'cars and houses') would be corporate assets.... and seized to pay the corporate liability.