Agree. I can program in pure languages like Haskell, Idris etc. but still prefer to program ‘in anger” in OO languages. Having easy access to mutable state is j

Agree. I can program in pure languages like Haskell, Idris etc. but still prefer to program ‘in anger” in OO languages. Having easy access to mutable state is just so damn convenient. As long as you are careful how you do it. Mutable state is a very sharp tool so be careful when you use it.