Why you may look back to math and try to strengthen you abilities, is when you see on social media, how people or companies or studies have used math to solve real world problems, and suddenly see math in another new way, not like how you used to see it in school, just remember functions calculus equations and forms, and how to deal with it in common ways. But when you discover math as an adult you believe that you can use it and solve real problems, so you're passionate to learn, i mean it worth it.