It can be a problem because you use your favourite language/tools over and over to be productive, but then you look up and ten years have passed and your skills are no longer marketable.
This is easier to see in the older generation - I have the pleasure of knowing some totally top-class programmers who have happened to spend their whole career writing FORTRAN. Would any of you guys hire them? No, you want the RoR kids, not surprisingly.
Like everything else in in life, there is a Middle Way. Don't have new-shiny ADHD, but try and tick over a new language or technology every few years.
It can be a problem because you use your favourite language/tools over and over to be productive, but then you look up and ten years have passed and your skills are no longer marketable.
This is easier to see in the older generation - I have the pleasure of knowing some totally top-class programmers who have happened to spend their whole career writing FORTRAN. Would any of you guys hire them? No, you want the RoR kids, not surprisingly.
Like everything else in in life, there is a Middle Way. Don't have new-shiny ADHD, but try and tick over a new language or technology every few years.