Computer languages are more about building a machine than communicating a human idea. Human languages are more about human things. We're all human and therefore should speak the same language.

Computer languages are sometimes so similar and help you build a similar type of machine. Think of ruby, JS, python, etc. All work very similar internally. I really wish we could pick one language (in a particular domain, say scripting) and have a monoculture. It saddens me when libraries need to be rewritten N times. I don't think there's anything silly about it. Web browsers could have picked python instead of JS, Rails could have picked python, and we would have been better off for it.

It's just a silly accident of history that we have what we have today.