[tartoran]

I am not an expert but from my understanding pain are signals perceived as what we subjectively call painful when something in our body/nervous system is damaged/inflamed or a system is out of whack. It is a very useful thing, it is trying to tell us something useful so we can act on it or just be aware of it. When something is out of whack permanently something in this system is malfunctioning. Without a body it is hard to describe the concept of pain and what it may feel to an emergent system with qualia properties. The closest I could think of is some kind of distress signal or base frequency change when the said system is under stress or wrong state and is perhaps used to self correct the system to a balanced state. If something is permanently painful then it ceases to be a reliable signal.

Psychological pain or emotional pain or distress may come closer to what such a system could experience and but it could also be an emergent property of such a system but we don't fully understand how this works. If such a system has emotional capability then it should be able to experience it because pain is such a state of the emotional spectrum. No pain no joy - no oscillation/flat