I find that practically speaking, 80 to 90% of the decision-making and what language to use boils down to what one is trying to do and what examples one can fin

I find that practically speaking, 80 to 90% of the decision-making and what language to use boils down to what one is trying to do and what examples one can find of somebody doing something similar. For medium to large scale software, ecosystem matters most because when you get stuck you don't want to be reinventing wheels that other people have already solved. I have definitely, for example, used Java in a project where I would rather walk on hot coals than add more Java to the world... Except the project was to write a second webserver that included all the accreted wisdom the company had built up over the years and we already had a first one written in Java. The pain of adding more Java was offset by avoiding the pain of having to explain to a vice president how the company got hacked a second time in the exact same way we got hacked 5 years ago...