The reason, to me, to use Kotlin is to leverage the JVM without having to write Java or Scala. When you don't have the decades of quality JVM libraries there, I

The reason, to me, to use Kotlin is to leverage the JVM without having to write Java or Scala. When you don't have the decades of quality JVM libraries there, I don't see much value in Kotlin, outside of high-performance applications that I don't need to write on mobile. Instead I can write TypeScript--and while I don't hate Kotlin, I quite like TypeScript--without having to constantly screw with marshaling between the native/UI layer and Kotlin Native.