would you give your kidney to a stranger?

I'm worried. Lately I've been able to have a lot of time to think. Today my mom was reading an e-mail from a family friend about their son who has had health problems since he was a baby. Most recently he has been diagnosed with lymphoma, which is in its advanced stages and has now basically destroyed all of his liver. His body is practically shutting down and soon his kidney (which is a transplant) will fail too. As my mom was reading the e-mail I felt so sad, I wanted to cry. And this is what worries me. I want to be a doctor and basically in that profession you work with people who are dying. But every time I watch a medical show or hear about people with horrible medical problems who are dying, I just get so sad. I am pretty sure my patients are not gonna want me blubbering and crying every time somebody dies in the hospital. But then again, I feel like the medical field is my place to be. Who knows, maybe after I get into the profession, I will be okay and I will be able to at least hold my emotions in pen until I get home or something. Maybe I will be stronger that I am now. I just hope so....