[pron]

Because it really isn't. I think that most Java haters are very young web developers with but a few years of experience. Having said that, there are quite a few languages that are much more productive than Java, and are a better fit for, say, run-of-the-mill web development. But very few languages can beat Java's performance and tooling (especially when it comes to runtime monitoring and profiling). More productive JVM languages make the best of both worlds, though.