the happiness and sadness of people buying a house    buying a house for most of the people is a once in a lifetime decision, which means people decide to do so only after coming across the ideal house.surprisingly, eight in every 10 home buyers are unhappy with their houses.    a survey conducted by the beijing consumers' association (bca) recently shows about 80 percent of the 2,315 respondents in 23 residential complexes of beijing ar......