F# is a cool language that I have absolutely no use for, sadly.
I know F# can tap into the C# ecosystem but you have the mental burden of translating every example and documentation from C# to F#. In Clojure land these is pretty bad, you have to spend a lot of time understanding these extreme over-engineered over-abstracted Java libs before you can begin to use them.
It also helps that C# has had some functional building blocks longer than Java had, which means more of the ecosystem has at least some support for passing around functions and the likes.