I love Nim. I been using it professionally for more than 3 years now. At first I started with it just as a faster python with types, but it so much more! You can run Nim everywhere regular places such as backend, frontend, mobile, but also in crazier places like GPU shaders and imbedded.
I also like the community. It's not so big that it feels like you only see people once but not so small that there are no useful libraries written. Just the right size for me. You can always get people to help you out on stuff, reminds me of old IRC days.