Where I live (expensive area, but not at all posh), we have a 3 bed house and a mortgage for approx half its value, and between that and childcare alone we spend approx £45kpa, which out of post tax pay means we have to earn approx £65kpa (I've done the tax as an approximation 30%, allowing for some higher rate, some lower rate, child care tax vouchers, blah), for house and childcare alone, before we pay for any transport, food, bills etc. DH has to buy a train season ticket (several grand a year), I need my car for my longish commute, I easily get through a huge wad of cash on these unexciting things. In order for DH and I to have the jobs we have, we need to live here or hereabouts.
However I do know on which side my bread is buttered, having been raised in poverty (not that I particularly noticed at the time, it seemed normal), as a youth I did some pretty heavy farm work for £10 per day, my first proper job was for £2.10 per hour, and I had to spend half of what I earned on bus fares just to get to work and back.
I educated myself out of that poverty, and now have a professional job. I do feel richer, but it's the small things that make most difference, like today I bought some pre-grated cheese for 40p more, it felt so decadent!