Technical aspects are almost irrelevant. For me, it's about the ecosystem. I do a fair bit of work on the CLR and JVM. The JVM has the following advantages: o

Technical aspects are almost irrelevant. For me, it's about the ecosystem. I do a fair bit of work on the CLR and JVM. The JVM has the following advantages: open source, cross platform, free tooling[1], incredibly more mature 3rd party libraries, zero OS cost to deploy, architectures ready to roll out of the box. A lot of the Java stuff I do is literally integrating some off the shelf bits that work 100% reliably first time and it's done. Compare to C# where I end up having to do a lot of leg work and navigating immature, abandoned or just broken open source projects. [1] By the time I've bought VS Pro 2013 with MSDN, ANTS profiler, NCover, VisualSVN, I'm down a pile of cash.