I am trying very very hard NOT to make my comments personal, although it is very hard in this case, for all sorts of reasons (like my considerate, kind, discreet and very clean OH, who, having opened his home to a stranger was asked by said stranger to go and stay in B&B on return visit,as there was only one bathroom- he was reeling from the insult and offense).
Many homeowners, like my mil, like ourselves, did exactly that - as described, and also had Au-Pairs and forster children before that- because we thought it was worthwhile, and because it paid for our daughters at University. many home owners have NO CHOICE WHATSOEVER (we did) to take measures to make the money go round, especially when your mortgage goes up to 19.5% (as it did for us int he 80s), for instance, and when essential maintenance has to be done, like a new roof or central heating. and the money is not there... you can't just call the council and they turn up and do it for you (as happens for my good friends in council housing).
What we are talking about now, is many house owners having NO CHOICE WHATSOEVER about having to downsize, or having to be creative in finding ways and means to do emergency expensive maintenance or pay for food on the table, or university fees, or an operation, whatever.... whilst others in subsidized housing do not have to. And yes, loss of privacy can be a pain, but the advantages far override this.