What kinds of economic activities are excluded from GDP? If GDP misses

What kinds of economic activities are excluded from GDP? If GDP misses these things, then why do we use it?

What will be an ideal response?

ANSWER

GDP ignores underground activities, household production, externalities such as pollution, and income distribution. Economists still use it because it is highly correlated with all other measures of the quality of life, and as such serves as a useful summary statistic.