I write a lot of Python too. I've written whole systems in it. Been using it since 1.5.2 days. And before that Perl. I know my way pretty well around sed and aw

I write a lot of Python too. I've written whole systems in it. Been using it since 1.5.2 days. And before that Perl. I know my way pretty well around sed and awk too and pretty much the entire Unix environment. These are all just tools. They each have their strengths and weaknesses. There are times when shell is the best tool for the job and when it is, I prefer to use bash. If I have to write POSIX shell because it's a constrained environment, sure, I can do it. It's just been something that's rarely been a requirement.