> That would leave you with Kotlin/Groovy/Clojure/Scala for the view layer of your Android app if you choose not use Java
> when you can use better languages like Kotlin, Scala, Groovy, Clojure is asinine
You seem to be piggybacking an aspiring JVM language (Kotlin) on top of three other alternative ones that have already made it (Scala,Groovy,Clojure). Because that trick's already been done before with them (i.e. Groovy piggybacked on the quality of Scala and Clojure), it makes your list of examples of alternative JVM languages seem disingenuous.
Sorry about that. They all have tools that make them work on Android. Kotlin is reasonable option imo. It doesn't effect app startup and runtime size is so much smaller compared to the others. Clojure Android adds 3 seconds to startup time for example. I haven't used Scala so I am not sure how nice it is for Android.
> when you can use better languages like Kotlin, Scala, Groovy, Clojure is asinine
You seem to be piggybacking an aspiring JVM language (Kotlin) on top of three other alternative ones that have already made it (Scala,Groovy,Clojure). Because that trick's already been done before with them (i.e. Groovy piggybacked on the quality of Scala and Clojure), it makes your list of examples of alternative JVM languages seem disingenuous.