I was asked in comments a couple of days ago whether I was doing mathematics while out of work. Somewhat sad to say, the answer is no or at least not seriously. While with my former employer I gradually did less research level mathematics until in the final years I was doing programming almost exclusively. So at this point I am rather out of touch with the current research and am not very motivated to get back into it.
Some people can work for years on a problem without much interaction with other people. I am not really able to do this. So as I gradually lost contact with the mathematics research community I became less productive. And I became more interested in other things.