In reply to Heike:
It's a funny thing this "comfortable" life.
I live and work in Surrey, earn around 2.2k after tax (and pension) per month, on my salary I could only raise about 150K via a mortgage when i bought 8 years or so ago. In this area it won't buy you a one bed flat. However I found a shared ownership deal in an out lying village, and bought 55% of a tiny (4mx10m floor area) 2 up 2 down house with a garden not big enough to make 2 parking spaces. I've got a nice cheap mortgage but have to pay £140 rent on the remaining 45%.
I'm not in negative equity (i was for a bit), but I'm probably in a similar situation to when I started, which means I'm a bit stuck in terms of moving up (I'm certainly not comfortable in this little space (especially garden wise and closeness to neighbours) even though it's just me.
And being on my own everything is more expensive with no co-earner/extra pair of hands, and there's not much left at the end of the month, but then I actually live very well. I eat out far too often (possibly as a function of living alone and most food packaged in portions for 2s and 3s) but really that means breakfast and lunch in the staff canteen, a toastie at the climbing wall, etc.
I probably consider myself better than comfortably off. I have lots of things I want (but dont need) expensive bike, climbing/camping gear, SKY TV, a fancy phone, Laptop and a Desktop a workshop, went skiing this year, alpine mtb trips the last few, uk holidays a plenty (in a tent) I have better than average car etc.
Comfortable to me would probably entail living on 500 a month less than i do in this area. I could save a fortune cooking at home and making lunches, planning meals (and everything else) ahead more effectively, down grade the car, drop the TV package and in all honesty I probably wouldn't notice in terms of happiness etc.
The only thing that to me is uncomfortable about my life is the tiny little shoe box I have to live in. I think one of the key things in modern "wealth" or lack of it is age. If I were to have been born 10 years earlier and to have lived an identical life in terms of earnings (adjusting for inflation) I think I would be significantly better off in terms of accommodation than I will be in ten years from now.
The huge rises in house prices in recent decades is in my opinion the second biggest factor in peoples ability to live a comfortable life (second to salary obviously) Of course I bought at a particularly bad time, but I would hate to have not bought and having to try to buy now, and I would hate to think what it'll be like in another 10 years.
It makes you wonder how kids born now will ever afford to buy a house without significant help.