playing God

I'm sitting here in the Health Sciences Library, trying to do work and killing time before my class at 2. I've been really bad with concentrating lately, so I went on cnn.com, and found this really interesting article about how med students aren't choosing family medicine and there will be an expected shortage of over 30,000 primary care doctors by the year 2025, as the AMA calculated. That is craziness. And while it all made sense - doctors are frustrated by all the red tape, etc, - it made me sad, too. Because I'd love to be a doctor. But then I remember my own family physician telling me that if his kids told him they wanted to be a doctor, he would discourage them from doing so. 

I've been thinking a lot about genetic testing. I have mixed feelings about it. On one hand, I am wary of it because it almost feels like we're playing G-d. But on the other hand, if you could know if you had a high predisposition to something like cancer, wouldn't you want to know so you could take preventive/protective measures? Once you know, you can't not know. Once you get those results, your life is changed forever - either way. Is it worth it?