What does 'afford' even mean? Once again it's kind of a relative term. Let's say in a situation where a person has absolutely no debt other than the house, lives in an area with low property taxes, etc.
Very true. I pay out roughly 35% of my monthly income into our house. I can only "afford" to do this because we have no other outstanding debt. For example, if I had two extra car payments, I could no longer afford to max out my IRA account for retirement each year, and this would be unacceptable to me. Personally, I think people live much more fulfilling and less stressful existences by living well within their means.
FWIW, my situation is roughly 67k in income and my wife's income is guaranteed because it is a payment from a trust setup by her grandparents. We also anticipate her going back into the workforce soon, as my youngest will be in public school next year. We owe roughly 140k on a 225k property.
Just for fun, let's budget:
We pull in around 4k per month after taxes and 12% into my 401k.
1) 15 year at 3.375% = $1400/month Mortgage with taxes and insurance figured in.
2) Roughly $500 a month in utilities.
3) We put everything (gas, groceries, bills that aren't utilities, fun purchases, eating out, etc) on a credit card and pay it off each month. Average sum of balances is roughly $1,000 to $1,500 each month unless we buy something out of the ordinary (e.g furniture, vacation, etc).
This leaves us roughly 10k to save or invest in some form or another each year. Whatever my wife pulls in when she rejoins the work force in 2012 will be saved, invested, or used to pay down our house until it's paid off. We have no financial stress in our life and our future finances are looking very good IMO. Also, until May 2010, when we purchased our current house, our house payment was $850/month on a 30 year loan, so we were living well below our means until recently so my wife could stay home and raise our boys. IMO finances are not rocket science. You just need to set your financial priorities, and then have the discipline and resolve to live your life by the priorites you've set for yourself (yourselves).