Comment by freedomben

At least for me:

* I don't trust Swift on Android to be well supported, either now, or in the future. I would never want to rely on something Appley on a non Apple platform

* I dislike Swift and find it to be an unpleasant language. This is personal pref of coures, just like preferred flavors of ice cream

* Dart looks interesting and like a good option, though I don't want to learn a new language and Dart doesn't appeal to me because it feels like they took javascript and made it more like Java, and Java is in about the middle of my list of preferred langs (see above comment about preferred flavors of ice cream). Flutter is a killer app though and might be enough to sway me.

* Kotlin is a nice language, though not nice enough to where I'd want to use it outside of Android. The ties to the JVM-world tooling/dependency management is very offputting to me.

Overall I have a strong desire to use my preferred language(s) for everything if possible, so things like this are quite attractive to me for that reason. Now that said, when I write Android apps right now, what I typically use is Kotlin or Java because I've found I always end up having to write at least part of the app in those, so might as well keep it simple and consistent in one lang. But I'm always on the lookout!