I am learning Swift this year. Surprised it hasn't been mentioned yet. I am hoping to make it is my main language, I doubt if you can live with only one languag

I am learning Swift this year. Surprised it hasn't been mentioned yet. I am hoping to make it is my main language, I doubt if you can live with only one language forever though. My reasoning is that this is one language that you can use to write apps for MacOS and iOS possibly sharing some codebase. It doesn't run on VM, so should be faster. Swift Playgrounds got me interested in this especially the fact that it seems to work with a lot of toys like Mindstorms. It might even evolve to support server side dev. So I see it as decent investment. Also people in Apple's ecosystem seems to spend more money on apps even with smaller market share of Apple. And really want to write apps that do something interesting as I am really bored with another CRUD webapp with pretty UI.