Drug rehab?

I am currently in my first semester of nursing school. Lately i have been thinking about where i want to go with my degree, and until this point I have been undecided on what area I could enter that would make me happy. Today I thought about a job in a drug rehab center, and I was curious if anyone had any thoughts or opinions on this. After seeing several family members overcome addiction it has always been something of interest to me, so I was just seeking more information. Thanks in advance