As a self taught dev, looking to go back to college, I'm always debating if I should major in CS or something else like Math or Stats in case software gets old

As a self taught dev, looking to go back to college, I'm always debating if I should major in CS or something else like Math or Stats in case software gets old to me and I want to transition to a quantitative field. But then I don't know what those kind of jobs are like and the chances are that I might feel the same way after n years. I think it's good to have something that's strictly a hobby where there are no real stakes to the game, so it is play. Work always means responsibility and largely doing it how someone else wants it done, even if you are an entrepreneur.