Which is heavily windows focused, which is non-starter for a lot of devs. Sure there is Mono, but it does not have nearly the man power behind it that .Net and Java have.
> And go work with C# and you'll pine for nothing.
If that was true, F# wouldn't have happened. (Nor IronRuby/IronPython). Even people who like the .NET platform often pine for something better for the task at hand than C#.
I've used all three and after a few years of C#, the other two are just a distant memory.