I'm not sure that a one income family is a utopia in this age either.
To be a higher rate tax payer you don't actually have to earn a lot in the sense that two earners on a fairly low wage will be better off financially, because together they will be taxed less and will have two tax free allowances rather than just one.
A higher rate tax payer / minimum wage combination is not one that gives freedom. It ties one partner into carrying all the financial burden and stress that goes with that, whilst the minimum wage earner may well find themselves in a situation where working will cost more than child care. It becomes only worthwhile to return to work if their are career prospects. Plus if the single earner looses their job, then you are much more at risk financially than a couple with more moderate incomes.
Push it a little higher though not much and the high earner looses CB whilst those on a moderate income keep theirs.
How you address this, I'm not sure. There are arguments for and against sharing tax free allowances for example. And simply raising the minimum wage without acknowledging that this will cut jobs and cripple small businesses in particular is short sighted. Working tax credits are a concept that is frankly laughable and ridiculous in practice yet remove them and you have an issue on your hands.
But ultimately I do think it comes down to society and its expectations rather than the cost of living. Even a lot of food we would see as 'essential' is in fact a luxury or a commodity. Its not the holidays or the tvs or the clothes or the meal out or the car or two cars. Its the bags of crisps or the ready meals or the fizzy drinks or the bar of chocolate or the occasional bottle of beer and wine that our parents or grandparents didn't have. We have got sucked into branding and brand loyalty. We take for granted that we all have central heating and moan about the cost of rising fuel bills. My parents grew up without it, and I remember them having to install it into our house when we bought it in 1984. It does all add up and it is about pennies becoming pounds. My Dad, born in the early 50s, describes ice on the inside of the windows and emptying the ashes from the fireplace in the morning as a child.
I think if people lived a 1950s lifestyle then fewer would need a second income. Even with high housing costs. They would simply save a lot more a lot quicker. Its our culture of freely available credit and instant purchases that really undermines the way we live. People don't save up to buy something and don't know how to, yet generations before had no option but to. Yet we blame the banks without taking responsibility for our own financial management. We take the attitude that they wouldn't give it to us if we couldn't afford it. That's not right any more than the banks were right. Its a joint blame and I think we need to wake up and realise that.
There's been two BBC programmes recently that have sort of made me realise that we don't a) really appreciate how we spend our money and b) just how much our culture and expectations have changed in a short amount of time. They were the above mentioned Back In Time For Dinner and Eat Well For Less. Both of which are worth watching and reflecting on.
I don't believe there has ever been a utopia as suggested. Just swings and roundabouts and really, we are much better off than we were. Our standard of living and life expectancy are the real indicators of that.
As for the OP and BU... I think there's been a few comments that have screamed they don't know they are born, making moral lifestyle choices that others my not be able to even think about and just generally not appreciating the lifestyle they do have rather than focusing on the negatives about it.