{} blocks are used but for one line methods/closures. Since programming has nothing to do with typing speed, there isn't much difference between `end` and `}` other than `end` making more sense in ruby's english-like syntax.
> Since programming has nothing to do with typing speed
I have heard this a lot, and I am not sure I agree. I agree that the limiting factor for how long a project takes to finish is never going to be how fast you can type, but when I am really in flow I am actually typing pretty quickly, and I don't really like more friction when it's not necessary.
Of course it's a matter of taste, but the argument that it's english-like never made sense to me either. There is no english sentence construct with "do ... end" or "wile ... end".
The problem with 'end' IMO is that you have to actually read the word, with } you don't. Of course, this is all useless to argue about. I quite like that lots of languages look different.
https://crystal-lang.org/reference/overview/http_server.html