It depends. I'm way more proficient in Python than anything else, but I'll still reach for PHP fur a single page template / dynamic report, or awk for some job

It depends. I'm way more proficient in Python than anything else, but I'll still reach for PHP fur a single page template / dynamic report, or awk for some jobs, bash for others, Perl if there's exactly the right CPAN lib, ditto ruby or node, c for some jobs... Some times a different language can so utterly change/simplify your approach to a problem it's 100% worth it.