I have experience with all three. It depends on what you are looking for. Do you want speed of development? Python has the lowest barrier of entry. You can crack it out in a few hours. However, you will have poor performance. You want something a little better, use Go. A little harder, but a bit faster. You want the best performance and most security? Use Rust. It is the hardest, but best in the end for size and performanc

https://haslab.github.io/SAFER/scp21.pdf