No, they can aspire to get train/educated and a good job so they can afford Marple. Otherwise what is the point of anyone working hard, if you get even the same for being on benefits?
A bit late this but not everyone who needs affordable housing is (what I gather from your posting) you would call "a scrounger". I have two relatives who took degrees to qualify as teachers and are working in the state system. Neither of them (and their wives, also teachers) live extravagant lifestyles and are saving for a deposit on a house. They have no children because they feel they can can't afford them yet.
They are, however, feckless enough to take a holiday each year - in tents, mostly in this country and are extravagant enough to own small (very) second hand cars which they share with their wives, a television (Freeview only) and, heaven help us, laptops which they have to have for work. Shock horror. No wonder they can't afford to buy a house - in Marple or anywhere else!