"I would imagine the percentage of parents that choose to both...

"I would imagine the percentage of parents that choose to both work be a lot smaller than the percentage that HAVE to both work. Just to keep up with the weekly expences..."

Well unless there is massive social change where the norm is that we revert to primarily 1 income households things are unlikely to change substantially as households with more income will always out spend households with lower incomes to get what they want.

"Not everyone has life styles that gives them choices."

Peoples lives are a product of their own choices whether good/bad, and so many peoples situations are due to their own poor money management.