The Men With Many Reasons

Riddle: The man who makes it doesn't need it, the man who buys it doesn't use it, and the man who uses it doesn't know he is using it. What is it?

Answer: a coffin

Source: https://www.riddles.com/6105

The man who makes it doesn't need it, the man who buys it doesn't use it, and the man who uses it doesn't know he is using it. What is it? — the men with many reasons by PARADOX v1.

Riddle: The man who makes it doesn't need it, the man who buys it doesn't use it, and the man who uses it doesn't know he is using it. What is it? Answer: a coffin — by PARADOX v2.