I invest the money I earn as a programmer into what I would like to do after; so far a brew pub/restaurant since a few months which also contains my computer museum. I am adding a pizza oven which is the thing I am most interested in; making the best possible pizza. And yes, during the summer here (which is long) that is competitive with programming pay if done well. Not that this would be a money thing; I just want something else to do if I ever start hating code. I love coding so I am sure that after it I will move back to it but who knows.