C++ is too complicated to even bother, and looks a completely different language every five years; I have yet to meet anyone that knows its syntax fully (C++ compilers included). Writing C/C++ means spending your time managing memory and then debugging memory management errors rather than thinking about the problem domain.
Python is very slow and has horrible package management.
Rust compiles slowly and the borrow checker takes a long time getting used to.
Java is bloated and Oracle-proprietary.
No version of Julia could even compile the example of the Julia book I bought, nor some of its own tutoials.
Perl is write-only.
...and CommonLISP? I know important and successful systems have used it in the past, but haven't heard anyone using it for anything I needed recently (but that could be due to my area, search engines, natural language processing and machine learning, where Python libraries - written in C++ to be fast enough - dominate the research frontier).
LISPs incl. CommonLISP and esp. Scheme are elegant, minimalist (Scheme in particular) and lack powerful IDEs and library support (at least since LISP machines disappeared), and excess parentheses make for a write-only experience, especially if you have to read the code of others (your own code may make good use of functional abstraction).