I can't pick for you, because I'd feel horrible influencing another person, especially when my opinion/values are so different from others. I started out in LTC/retirement and it gave me the best experiences. I learned much from med pours, wound care, treatments, inservices, community resources, and emergency situations (sending someone to hospital, unexpected deaths, etc).
The addictions career would be interesting, but I like to start out with a foundation in my nursing experience first.
Please keep us in the loop with your decision, I'm curious to see what you decide