HersForever writes about the different kinds of inflicted pain within a BDSM relationship:
For me, however, I think that the pain and desire to submit to the pain is part of a desire to return to my childhood, where a strong figure controlled my life, decided what was in my best interest, and worked to mold me into a better person.
That being said, there is a difference in pain used for discipline and pain used in play. Pain used as a discipline tool, is not enjoyable in the sense that pain in play is. During Disipline, the knowledge that I let down my Mistress changes my perception, and I do not want to repeat this pain. Instead, I submit trusting that Mistress has my best interest in mind and is trying to make me a better person.