Our household income is high yes, however we have several children .
Okay so that is basically my point.
I said I don't think it really takes £70 a week for a third or fourth child, because a lot of the things that need paying for have already been paid for.
You came back with your budget, which if you had 3 children would be over £21,000 a year just on children. And like you said that doesn't include car, living expenses, mortgage etc. The figure you gave was purely child related needs.
Sorry, I'm calling bullshit. Surely you can see that since a huge amount of people are only earning £20k, that spending £20k on three children before any actual living expenses is not how the vast majority of people live.
That's what tax credits were supposed to be for, no? To elevate "everyone" to the same sort of level?
To make sure children didn't go without and had a decent standard of living?
Not to elevate the whole population to your entirely unrealistic level of lifestyle. 
I maintain what I said in my original post, the more children you had, the better off you were at the end of the month. Particularly when you take into account that often the families most in need were already entitled to housing benefit at full rate, free school meals, uniform grants, council tax rebates etc.
They are still getting £154 a week in tax credits and CB, with £15 per additional child above 2. And any children above two need to be worked into the budget, which is how anyone not entitled lives 