Imagine you have a spouse, kids and house - so mortgage, food, heating etc to pay for - and you lose your job and can't get another one.
What you do is...
- Take out all the loans you can - empty your bank account, hit your limit on all credit cards.
- Spend all this money on luxuries you wouldn't normally buy.
- Wait for the shops you spent all your money at to offer you a job to cope with the 'boom' they just experienced
The state spending to promote growth is like a starving man eating his own leg to fatten himself up.