You were always only allocated a house according to your needs.
That's just not true in my experience. When I was a child I had quite a few family members living in council accommodation, five of them had spare bedrooms, only one was over occupying.
Anyway, that's not really the point.
Those of you that object to absolutely everything about the 'bedroom tax' - do you really think it's right that people are given more money than they need to house themselves?
Do you really think it's wise to spend our limited amount of money on paying for people to have bigger houses than they actually need?
How would you feel about everyone being given money to house themselves, as long as they are on an income of say, less than £40,000? That way, everyone would be able to have an empty bedroom in their home, and socialists would be happy because everyone is being treated the same. That would be fair, right?