I think people want the ability to modify software they use (that's the whole point of open source). It's easier to modify software in a language you know than

I think people want the ability to modify software they use (that's the whole point of open source). It's easier to modify software in a language you know than one you don't. That's why these things exist. Going back to the hammer example, imagine that you've spent your whole life using screws. You are probably going to buy furniture assembled with screws instead of with nails, because you know how easy it is to twist the screw out and put your modification in instead. A clear path exists in your mind, whereas with nail-based furniture, who knows?