I have, actually. I really like the idea of it and the project is <i>super</i> impressive (bootstrapping as quickly as they have is legit!), but in practice it doesn&#x27;t feel right to me. A lot of it is library fit, but a lot of it is inherent to the way that Crystal works. I, personally, find relatively heavy metaprogramming to be super valuable and to make me significantly more productive with my tools. I live on `instance_eval` and `send`, and Crystal&#x27;s flavor of compile-time macros doesn&#x27;t do it for me.<p>I love that it exists, and as it matures I will totally consider it for Big Time Web Application Development (for me that&#x27;s Kotlin right now). But I don&#x27;t think it&#x27;ll ever be quite as &quot;stretchy&quot; as Ruby is, and Ruby&#x27;s a good all-purpose language, for me, because of that stretch.