I bought my house in early 2007 and mortgages were indeed crazy back then. My analysis said that at the mortgage rates for a 30 year fixed mortgage back then (a tad over 6%) said that my ideal home financially would be around $H or less, that I could go up to 1.25 $H without house payments being high enough to crimp my currently lifestyle, and maybe I could push it to 1.5 $H if the house and location were really great.
When I went to get a mortgage from the now infamous Countrywide Financial they looked at the same data I had and pre approved my for a loan of around 3 $H.
That was an absolutely ridiculous amount. I had the analysis to prove that, so just laughed and went back to looking at homes in the under 1.5 $H range [1].
A lot of people who didn't know how to do their own analysis thought that the mortgage companies would only approve them up to what they could reasonably afford, and so getting a pre approval for much higher made them think they could actually afford way more expensive houses than they actually could.
[1] In case anyone is curious, I found a house that was almost perfect as far as size, layout, and location for 0.9 $H and almost bought it, but then found that its water source was a well owned and shared by a group of 4 houses. I could not get satisfactory information on how maintenance and repair of the well was handled. I ended up with a place a little bigger, in a better location, but without quite as nice a layout for 1.16 $H.