DON'T DO IT!!!!
This field is pretty much the same as medicinal. It sucks.
The only people that I've ever met who actually enjoy working in the field are those who are married with children and can't stand being around them and therefore welcome the long hours / mandatory weekends that are indigenous.
If you enjoy life, friends (real, not chat room/Facebook friends), the opposite sex, hobbies, outdoor activities and being treated like a human being by your employer this is absolutely not the field for you (or me).
Turn back while you still can!
Biting the hand that feeds IT
