Why is this the answer?

The answer is coffin because this riddle is a very smart word puzzle that tricks your brain by telling the life story of a special wooden box. It is a little bit of a mystery, but we can solve it piece by piece! Let's start with the first part: The one who makes it, sells it. This is talking about the person who builds the coffin. This person is usually a carpenter or someone who works in a funeral business. They measure the wood, cut it, and put the whole box together. Once their work is done, they sell the coffin to a funeral home or directly to a customer. The builder makes the box and then sells it. The next line says: The one who buys it, never uses it. When a person dies, their family or friends need to buy a coffin to give them a proper burial. So, a living person is the one who goes to the store and pays the money. They are the buyer. They buy the coffin for someone else who has passed away, so they themselves will not be getting inside it. The buyer is still alive, so they never use the coffin. The last part is the cleverest: The one that uses it never knows that he’s using it. The person who is placed inside the coffin is the one who has died. In a way, they are "using" the coffin as their final resting place. But because they are no longer alive, they cannot see, hear, or think. They do not know that they are resting in the wooden box. The riddle is solved by thinking about the three different people involved with the coffin: the carpenter who makes and sells it, the family member who buys it, and the deceased person who is placed in it without knowing.