At times we tend to take things for granted, even the things without which we cannot live. It is only when these things are absent then only we realize their importance. Similarly for woodworkers, clamps play a very important role, and without these clamps it would be almost impossible to create any type of wood item.
The truth is that woodworking might not exist without the existence of clamps in the first place because it is the clamp which holds the wood or the wooden parts together, without the clamps the wooden pieces would fall apart and it would be impossible to work with them. However some argue that there is always another solution for this and that is to glue the wooden pieces together in order to work with them.
While it is true that gluing the pieces together does the same job of holding the pieces or fastening them together with a clamp, but what happens after you are done working with the piece and you need to detach the pieces? It would not be pleasant or easy to remove the glue and even if you manage to remove them, they might leave behind some sticky and stubborn residue which mars the beauty of the wood. Hence woodworkers appreciate clamps a lot and they understand their importance.