Comment by nlh

I hear you, and I too love Ruby, and I too have yet to actually need the performance benefits of Crystal. But man, you don't realize how awesome static typing is until you actually start using it. There are whole classes of bugs that just get nixed before the program even runs. It makes you think more about how to structure things, how you're passing arguments, how you use variables, etc.

Now maybe you're really really really good w/ Ruby and you don't make those mistakes anymore, but for an "advanced beginner" like myself, it's really helpful.