Its really a big gamble that this family has to make. They are betting that by year 2020, they will be millionaires. Just like all of us here, we want to be rich with bitcoin. But they have taken it to a different level. On must to think logically because its 2-3 years from now and how do his family survived then? I guess bitcoin has affected and changed a lot of people's mind but somehow, you should only invest what you can afford to lose. This family invested everything and chances are that they won't be living normally and have to wait till their gamble pays off.
I think that this is a big risk and the family has went through extreme measure just to have bitcoin. I agree that bitcoin is a good investment but endangering their finances and lives is too much, and I think that its a greedy act since they expect to be millionaires in the future. It may be true that with high risk comes high rewards but this is too much of a risk. No one should go through such lengths just for wealth and money because money isn't everything.
They will lose everything and be forced to live in campsites forever if the market suddenly crashes and bitcoin falls. They should have at least left some just in case of emergencies or for contingencies, or at least some stable shelter.