[321tt]

My point would be: Yes, I can imagine doing that. Done once or twice for some strong emotions, it's probably fine, similar to it being fine drinking out of stuff that way. Though one has to be careful and seek professional mental care if the urges don't fade away, as it could be a quick path to both emotional drain and/or addiction. (Yes, you can get addicted to pain and hurting and really ruin your life!)

So like anything else: It's a usable tool, but dosage has to be very careful and limited!