We are (or will be) just above the HRT threshold in 2013. I just did a calculation on the direct.gov.uk website, to see how much we'd get in benefits if we weren't working and lived in rented accommodation.
Guess what? We'd get more in benefits that we currently bring home now (excluding CB & CTC), because after we've paid income tax, NI, pension and childcare, we bring home less than 2/3rds of that 44k.
Oh, and we'd also get; free school meals for the kids, NHS healthy start vouchers for the under 4's, free prescriptions, free dental treatment, free sight tests, vouchers towards the cost of glasses or contact lenses etc. - This all adds up to quite a bit too, approx another £50 per week.
Yes, I know that eventually we'll own our own home and will have a (half decent) pension, but really in day to day terms, someone on benefits with the same number of kids as us has more disposable income that we do on 44k.
Makes you wonder why you bother, doesn't it?