I'm not sure if I agree with making comments a first-class citizen in a programming language. Good code documents itself and should be first-class. Comments

I'm not sure if I agree with making comments a first-class citizen in a programming language. Good code documents itself and should be first-class. Comments should be there to clarify certain decisions that you've made while writing code. Handing out citizenship to the comments just clutters the code flow and will stimulate bad commenting behaviour. I really don't see any pros for 'executable' markdown at the moment, apart from being cool.