I used to be a big ruby/rails fan but I have to agree with you. I now write c-sharp and it's a lot less stressful than Ruby. If a Ruby/Rails codebases get to a large enough point it's really difficult to keep track of what types a method you wrote accepts. You end up just constantly double checking your own code. Or you end up with a few type checks and/or type conversions at the top of every method. And maybe I was doing it wrong because it was early on in my career. But when a method can accept literally anything and return literally anything, not even a strong IDE like RubyMine can save you.