Context: I wish I had done this last year . What a waste of effort it was to put plastic on the windows when I might as well have been living in a plywood shack as far as heat retention goes . How boring I have become . I went with my friend M to see flamenco last night though .

Question: What may be the reason for them thinking they may as well live in a shack ?
Options:
0. None of the above choices .
1. They want to live somewhere else .
2. A shack would be less expensive .
3. The plastic on the windows did nothing for heat retention .
Answer: 3