Yep, you have to use C# and Java because they are safe. If you want anything extra, you need to use $library, because only $library's maintainer is trusted with the dark corners of the language. Look how powerful we are, millions of libraries. Look at those Lisp guys and their sorry examples of package managers. /s

If there's one thing I've been happy with learning Common Lisp and Clojure is that you only want libraries for things like algorithms, data formats, and protocols/interfaces. Mostly because those often have standards. Anything else should be a snippet to copypaste even when presented as a full program.