I think there's an important distinction to be made here, and several people have touched on it already. There is a difference between play punishment and real punishment. There are some that enjoy the pain, but for me the difference is the mood and intent behind the pain, if it's involved. As several have said, for a sub that enjoys pain, the ideal punishment is not physical pain, but often a more mental punishment. Punishment should convey the weight of the disappointment felt by the Dom/me. Neither the sub nor the Dom/me should not derive any pleasure whatsoever from that punishment. And I have to agree with Annie that any sub that purposefully eggs on a Dom/me by being disrespectful or disobedient just to get that punishment is not a sub that I would want personally. The sub should be striving to do all in their power to please the Dom/me, not manipulate them into giving them what they want. The same applies from the other side. Any Dom/me that makes up reasons to punish a sub isn't much of a Dom/me in my eyes. It's a Dom/me's job to teach a sub, to guide them, support them. Not to find nonexistent reasons to tear them down. For me, that just doesn't allow for a relationship of trust from either party.