What do you think of CSS in JS?

Hey everyone,
I use and enjoy styles components in a large-ish app. I've always been a fan of CSS overall and there are some things I love about SC and things I don't . In React apps the ability to dynamically effect css with props has been a really nice. Also, once your design system is in place it's way easier to have members of your team import and use a Card component rather than assigning a class.
Thats a great initiative.
Thanks