Hi Carrie - welcome
sounds to me like you're thinking about what you want - you're also wanting to distance yourself a little from the chaos of your partners addiction, and develop a few boundaries just in case things don't have a rosy outcome.
I think both those things are very understandable.
It sounds like, after many years of co-dependency, you're looking after your own interests rather than someone elses - I would not call them wrong at all
D