I'm a 20 year-old male, and I haven't so much as shed a tear since I was maybe 13. I've had one or two crappy events happen to me during this interval: a death in the family, as well as a cancer scare of my own. Neither event prompted me to cry. The closest I come is when I'm watching a sad or emotional movie/show, I kind of feel like there's a lump in my throat, and my chest feels a bit heavy.

Lately I've had the urge to try to induce crying by watching movies/shows that friends have told me mad them cry, but none have succeeded so far.

My question is: is this a problem? Should I be worried about this? Am I emotionally detached from the world? Does anyone else have this condition?