@7e6185e6 @0e1b5160 I'm using the fish shell on my workstation. 
Root shell has always been and will always be the default one. When I was younger I changed it to bash and an update caused headaches 🤕 

 @7e6185e6 @5f9bb1a8 @0e1b5160 my 2¢ here (actually, indeed two remarks):

1. What's "wrong" with #csh is it's a non-standard shell, many things work differently than in a #POSIX-compliant (bourne) shell, sometimes in subtle and surprising ways. For me, this is just unnecessary friction, you'll always use a bourne shell for scripting, and I want my interactive shell to work exactly the same (plus extensions of course). Regarding this, #fish is even worse, while #zsh by default is (almost) #POSIX-compliant, can emulate a lot (including #csh) and is comfortable by extensions.

2. #FreeBSD offers "toor" as a second name for "root" with its own entry in the passwd database. If you activate it (by setting a password), you can change the shell of *one* of the accounts safely, as long as the *other* one keeps having the default shell from base. 

 @7e6185e6 @5f9bb1a8 @0e1b5160 

⚙ D40565 Remove toor backup account 

<https://reviews.freebsd.org/D40565> 

 @7e6185e6 @5f9bb1a8 @0e1b5160 I run zsh off my ~/.profile with a short exit delay.  If it breaks I just have to ^C and I'm dropped to a sh prompt.