I miss neuroscience. I knew I would miss it even when I made my decision to move on. That said, I have found myself using the same mental research and problem-solving faculties in my current job, even though it has no link to neuroscience.
There are many more options out there than you’re easily aware of – some careers services may channel people towards certain career paths. It can be hard to see options other than academia when you’re in academia, but leaving isn’t a sign of failure, it’s a choice.