But there are killer features in Ruby. Plenty actually. Features that kill it, that is. Its cryptic error messages. Its fragile and incorrectly designed statements-end-on-newline-or-maybe-not and leading-whitespace-matters syntax. The names of almost all list related built-ins. The syntax sugar for methods accepting one block/closure - the syntax in itself is silly, but the worst thing is that it restricts you to just one such parameter unless you jump through hoops even most "seasoned" Ruby developers are not aware of. The cool and meaningless names of even the most basic libraries (guess, without looking, what's hpricot for!). The fact that not only you can't force yourself to declare variables, there's simply no way to declare one even if on a specific place you did want to be sure you are working with a new X ("hey, a method should have no more than five lines. There's no need to declare variables." - "Sorry, I've got five hundred methods already, I've run out of names!").
Enoch was right!
Enjoy the last years of Rome.