I can assure you, people do moan about mortgages!
It was spending that got us into this mess in the first place. Firstly, with the prime mortgage crisis (people borrowing more than they could afford) and then public sector borrowing spiralling out of control.
What's needed is a balance between spending and saving. At the moment the inbalance is that more spending is required, but any spending needs to be based upon savings. Banks get their money to lend out from savings.
Perhaps then, banks should be forced(by legislation if necessary) to lend a certain amount or percentage of their income from savings, to individuals requiring a mortagage or entrepreuners wishing to start or consolidate a business rather than just hanging onto the dosh, which is what they're doing at the moment?
Hang on, didn't you blame the evil banks (boo, hiss) for their reckless lending for starting the whole crisis?
They've reacted by being more circumspect in who they lend money to and how much they lend, and now you're criticising them for this as well. They really can't win.
With regards mortgages, someone on £200k pa will have no problem in getting a £500k mortgage on a £1m home. Where people are going to struggle to get the banks lending to them is when they are on £20k pa and wanting to borrow £250k on a £250k home. So it's not that banks are unwilling to lend money, it's that they are unwilling to lend money to businesses or individuals that they see as too risky.