IMHO, there are certain developers who've always liked Java exactly as it is. They view Kotlin as too hipster-y, sugary, complex and changing too fast. I think

IMHO, there are certain developers who've always liked Java exactly as it is. They view Kotlin as too hipster-y, sugary, complex and changing too fast. I think those people should just continue to use Java. Then there's other people like me who come from other ecosystems. I used to write Ruby and I just can't stand how verbose and convoluted Java can be. It makes reading code a real pain. But with Kotlin I found a language that struck a good balance between expressivity and compile-time safety. Maybe Kotlin should do more to convert people from other ecosystems rather than trying to cater to the kinds of people who were never offended by the dullness of writing Java.