I'm not going to say that you should keep "up-to-date", or that you should know every popular song or whatever.
It's also fine to not enjoy some new genders of music - maybe hyperpop just isn't your thing, right?
But you should attempt to keep learning new things, and to update your idea of what "new" is.
It's much too easy to get stuck in the past and keep thinking of music made when you were young as "new".