Oh well, I think there are two main ways of looking at this. Either you see it as the government/Daily Mail? seem to: feckless HB claimants living in luxury accommodation let to them by greedy landlords milking the Social Security system - people (often from ethnic minorities) who are breeding like rabbits and bringing nice neighbourhoods into disrepute, lowering house prices and taking up places in local schools and hospitals, which then start going downhill too ... Or you see it as a social problem that has arisen because of buy-to-let landlords pushing up house prices, lack of council housing, too many empty properties, boom and bust economics, rising social inequality, etc etc.
Either way, it is a poicy brought in as much for ideological reasons as for any others, imo. It's just a huge disgrace (imo) and a shame and a pity that so many children and families are caught in the headlights.