Because people want to? I think a big part of it is that people like trying new things and trying to differentiate in some way. In something as competitive as w

Because people want to? I think a big part of it is that people like trying new things and trying to differentiate in some way. In something as competitive as web dev, it makes sense that the churn in frameworks is so high, because everyone is looking for just that little edge or unique special sauce that makes development a bit easier or makes the competitor a bit more obsolete, or attracts talent thats just a little bit better. For someone out there, a little edge in CSV parsing is going to make their lives just a bit easier and help them do just a bit more than the competing lab, and grad students/labor is cheap, so why not have a grad student play around with Julia and see if you can get anything out of it?