Why is Dart not popular? When I think introspectively I didn't want to use it because I was never sure what it gave me over what I already used. There was als

Why is Dart not popular? When I think introspectively I didn't want to use it because I was never sure what it gave me over what I already used. There was also the abandonment of Google Web Toolkit (GWT) which I liked that Google abandoned and that I wasn't sure if Dart has staying power.