Since emotions are drivers of my perception (I either can’t think of anything positive when I’m severely depressed, or it all seems futile and not worth trying; or, if I’m in a good mood, it’s hard to dwell on things that infuriate me, or I’m willing to view them as solvable challenges), I believe managing emotions and learning how mine work has practical value.
Also, from an existential viewpoint: were we born into our short, limited lives to constantly suffer and deprive ourselves of satisfaction? Until there’s definitive, unquestionable proof (a comprehensive metaphysical account that can reliably answer if we have free will and if we do, how much we have, if we’re in a simulation, and also reconciles different levels of physics along with questions around consciousness) I’m going to believe no, that isn’t the case, and I’m here to experience internal fulfillment. Which is a much more philosophical, long-winded way of reasserting my conviction that I believe there’s value in managing my emotions.