People need me, but they always give me away. What am I?

Common Wrong Answers
“Time”
While people value time and often give it away by spending it on others or activities, it is not something that is 'needed' in a traditional sense the way money is.
“Food”
Food is essential for survival, and people often share it, but it is not typically given away as a form of currency or value, which is the core of the riddle.
“Love”
Love is something people often give and need, but it does not fit the concept of a tangible item that is exchanged like money.
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