I just wanted to see if I could do it, no pressure. And I keep the scar as a reminder that pain is only in the mind. I'm sure I could take more, but
I'm not in the mood to strap electrodes to my balls and nipples and flay myself alive.
As for eternal pain, there is no such thing. If it is going to last forever, there will be no reason for pain when you cannot change your predicament.
You might as well sit back and enjoy it as a hot bath.
Immortality would be a much worse fate
XAOS