>>33991both are fun in their own way. go is really, really fast at developing things which is really fun! its not that special, though. it gets the job done.
on the other hand, rust is very experimental. it has a borrow checker which is very difficult to understand. rust is lower level than go which might be more or less fun to you depending on your skills and interests.
how much experience do you have? if you want to learn rust then learn C first.