Getting a mortgage isn't a short term reason why people go into the housing market. Normally people want to own one for life ensuring their mortgage is payed off as quick as possible.
People who rent it's like putting money into a fire as they get non of it back. Atleast people who mortgage get all of it back and if it does go into negative equity the won't loose out on what the renting will loose out. The mortgaged house still has a resale value.
It isn't though, you get a service for what you pay. There are no maintenance cost which you would get if you bought. Buying a house in a today's market is a foolish thing IMO. The market is on the verge of a crash so it would be akin to catching a falling knife by buying a depreciating asset. Not to mention the fact that renting gives them the freedom to move to where the jobs/opportunities are without any hassle (Blackpool does not have long term career prospects), getting tied down with a ball and chain at a young age is not a good idea.