I'm working as a software developer right now and am applying for PhD programmes in robotics and environmental conservation. I've put in my notice at work recently and should finish working there mid-February, about a month after the PhD application deadlines. I am quitting for a number of reasons, one of them including wanting to focus on learning how can I help the environment with my tech skills. One of the ways I can is to do research in a relevant field - hence the PhD.
I was wondering if I should mention my quitting in my PhD application. On one hand it demonstrates dedication to my interests. On the other hand, leaving your job without anything else lined up is an... unorthodox move in the professional world and I can see how it could be taken as a sign of volatility. What does stackexchange think?