I'm not sure you are on the right thread. This thread is about moral hazard, where people may be encouraged or inclined to engage in risky or morally dubious behaviour because they are protected from some, or all, of the consequences of that behaviour, or they are given incentives to do so. It matters because it changes the nature of markets and may pass on costs to other blameless people. (Some) people will act differently based on the available incentives to act in a certain way. Bankers availed of it, and so do property owners. Saying it doesn't happen is a bit like thinking insurance fraud doesn't happen. A lot of people have suffered the ol' whiplash in Ireland though, I think we'll agree!
Look at it this way. If I want to borrow to buy a house, and the bank says I can borrow 400k, I might think it prudent to borrow much less than that. Say only 300k. But my brother (on the same wage) is a bit more reckless, he is going for the full 400k.
We both buy our houses. Naturally enough my brother's house is nicer than mine. Maybe it has a much bigger garden, maybe it's in a better area. Maybe both.
The economy turns. Both my brother and I suffer cuts to our wages. Thankfully I was prudent and I can absorb these cuts by making some changes to our family budget, while continuing to service my mortgage fully.
My brother though, maxed out his borrowings, and despite making some cuts to his lifestyle, he isn't able to meet his repayments. There was a time when this led to repossession if some sort of agreeable arrangement could not be reached, and then my brother would have regretted his unwise decision to max out his borrowings, but no longer.
Now repossession is to be the "last resort". Ireland has effectively decided that really only the hopeless cases (and maybe not even all of them) should lose their properties. So instead the Government, the whole political establishment really, and as a consequence the banks, will offer my brother every possible arrangement so that he stays put. Capitalise arrears. Interest only. Deferred interest. Split mortgage. Debt write down. Some or all of these methods will be employed so that he can remain where he is.
When I look at my brother, I'll feel a bit foolish. After all, what did I get for my prudence? If anything I feel it's me who should be getting something done for me, I made the "right" choice. Maybe I should start spending a bit more...maybe I should upgrade my car? The mortgage can wait, right?
Particularly when you consider some of the things the mortgage holders advocates have argued for (retention of private school places for children, holidays, for instance) it is very hard to see why someone should be prudent. Why not just load up on credit, send the kids to private school, buy a nice car, book that holiday and then hope for the best? If it all goes wrong then everyone has decided that you must be accommodated so that you don't suffer much and you stay in the house.
Personally, as someone likely to buy a house in the next 2-3 years, I've learned the lesson. I should not be afraid to borrow the maximum amount because there will be no real negative consequence for doing so. The bank and state have negated the risk. So I will.