Re: Benefits?
You're not going to lose your Java skills, unless you have the memory of a goldfish. It knocks off many of the rough edges to Java (especially Java6, which Android is stuck on).
Much more useful syntax in my opinion, eg properties, auto typed variables, lambdas, no primitive types (atleast not from a programmers perspective)... without alot of the verbosity that Java has. And crucially it still compiles down to bytecode so the safety is still there, and the same meaning is still there, it's not dynamic or anything scripty like that, it's still safe.
Pretty easy to learn for a Java programmer, because all the under-the-hood stuff is the same.
Biting the hand that feeds IT
