Is Pain a physical substance ? Does it have a chemical composition ? A physical structure ? If at all Pain has a physical structure, I guess it must be a gas, for it has a lot of properties which are identical to those of gases. Pain, like gases, can be compressed and bottled up. Pain can also expand to take up all available space. Pain could grow to occupy your whole mind, your whole life even. Or it could be bottled away and relegated to a dark recess of ones’ mind, with the hope that the seal on the lid never comes undone.

Or does Pain belong to the group of Alcohols ? I certainly know of many people who actually seem to get high on Pain. Some are even addicted to Pain. There are those who claim that they need Pain to feel alive.
While a bit of Pain could lead one to better appreciate the brighter aspects of life, just as a good wine can be an asperitif, too much of Pain can be a dangerous thing.