Not every person under the age of 25 has the ability to turn up at home and be welcomed with open homes, Indeed some people under the age of 25 do not have parents or other family at all to turn to. Therefore the decision to scrap all housing benefit to people under the age of 25 is repugnant and should not be allowed to happen.
They may have been living in care until the age of 18, when they are turned out into the world, maybe unable to get a job, but needing to find a roof over their head at least to enable them to claim other benefits.
They may have been orphaned themselves in late teens.
They may have been kicked out of the family home, either because they have come out as LGBT or maybe because they have become pregnant or for any other reason.
Or what about those young people who have moved far away from home for the chance to gain employment, even if that is in a low paid job that entitles them currently to housing benefit. Surely Mr Cameron isn't asking them quit their job and return home (if they have one) because they cannot afford to live near their place of work?
The lives of under 25s can at times be hard enough if they are made to fend for themselves for whatever reason, whether above or something else. Scrapping housing benefit for under 25s fails to look at the need and seriously puts many young people in the dangerous position of finding themselves living on the streets.
Cameron said that the Conservatives were now the compassionate party in the lead up to the 2010 General election. That compassion seems to only kick in once you reach 25 or maybe pensionable age.