British scientists have calculated the amount of money required to buy happiness:
“By comparing these two types of information, they were able to put a "price" on social and lifestyle factors. So, for example, they found that having excellent health was worth the equivalent of a £304,000-a-year pay rise in how happy it made you feel.
Marriage increases happiness levels by the same amount as earning an extra £54,000 a year, although, surprisingly, living together was worth more, at an extra £82,500. Meanwhile, chatting to your neighbours on a regular basis would make you as happy as getting a £40,000-a-year pay boost.
The scale also works in reverse, however, so that the grief of becoming widowed decreases your satisfaction-with life by the same amount as your salary dropping £200,000 a year.”
Other research shows a direct correlation between reported happiness and income level, showing that money does buy happiness.