Same here. We have adopted F# instead of Haskell. We get most of the benefits and none of the downsides. F# is a truly multi platform environment (I know Haskell claims that too but fails in practice). If we want to write impure, imperative code without monads, we can. We can also use every single opensource project out there without learning a new operator DSL and style. There are some annoying things, but the benefits outweigh those. The development velocity is also great. We can implement prototypes in a few hours and put a new service into production in a matter of days. There are few things that you need to set in your projects as opposed to learning a ton of compiler flags. I have never thought that I am going to be on a Microsoft platform once but here we go. It works and it is very convenient.