I've been working in C#/.NET for a while and I've started using Ruby recently for a couple of different projects at home. It's messing with my head because I'm starting to kind of hate the rigidity I'm forced to work with when I'm deciding whether I should/should not implement an interface.

That said, yes, Ruby with interfaces seems kind of pointless and is just throwing more code in, which is the opposite of one of the nicer points of the language.