Off topic not feeling much pleasure or pain

I believe alcohol can numb you and at times I think parts of my body stay somewhat numb. It made me wonder when I cut myself again tonight by accident and I barely felt it.

Apparently there are some people who feel no pain at all.
http://www.nytimes.com/2012/11/18/magazi…

This is not good and often results in an early death due to not feeling pain when something is wrong. Such as a broken bone internal bleeding or something else wrong.
I never heard about this before and thought I would share. I was wondering on another thread if I have a more difficult time emotionally bonding with someone because I simply do not feel very much OxyContin or those feel good chemicals. I'm not numb all over. That would really suck.

Have you ever heard of someone who can't feel any pain? Makes me wonder if they can't feel pleasure sensations.