For me, it is an exercise in communication, in various ways. I enjoy such exercises.
It is also a distraction from other things, which brings relaxation.
Contact, intellectual stimulation, personal development/growth, relaxation. Probably more.
It is not my intention to cause pain, it is my intention to experiment and improve upon having intellectual debates about emotionally charged topics such as "religion" or "sacret". I am deeply interested in such exchanges.