You can't? Oh, then your argument is fallacious. Nice try at rationalizing a false premise, though. Well, actually, no it's not. It's pretty sophomoric and elementary.
In the real world people can wait for many months for a house to be built with a deposit much larger than the cost of a BFL device, and they are perfectly happy with that, as long as the builder doesn't go bust and they get their house in the end.
see:
when you're buying a mining device, you're essentially paying now to get bitcoins later.
In this case BFL failed to deliver on time. Hence, you lost the opportunity to mine several (thousand) Bitcoins [and counting] if they had shipped when they were scheduled to ship.