At some point a balance has to be struck. If you spend all your time trying out new technologies, you never really get to know any of them very well, and your p

At some point a balance has to be struck. If you spend all your time trying out new technologies, you never really get to know any of them very well, and your productivity is constantly hampered as you relearn the ropes on every project. I am all for learning new things, but I think there are definitely cases where it's reasonable to pass on rewriting everything just because someone thinks that "smart people use language Y, not X", and "X developers are too dumb to use Y".