Business or pleasure ? Take an example from Warren Buffet. The market was descending and he bought shares. The value of shares are down, that is the time to buy.If the management hasn't changed, the product is the same or innovative and there is a glitch in the system that calls for investing especially if you still have good earning power. You would be selling the Harley in under 2 years. There are four for sale within 2 blocks of the house even with their fantastic mileage.