Debian. Several reasons:
- It’s trustworthy.
- It’s not going anywhere. Debian existed when I was a kid and it’ll probably still exist when I draw my last breath.
- I know how to use it, since, once again, I’ve been using it since I was a kid.
- It has all the desktop environments.
- It fully supports systemd. I do not miss the unreliability, slowness, and complexity of what came before that. (Normally I wouldn’t mention this, but your former distro of choice exists solely for the purpose of not having systemd, so it’s relevant this time.)
Dynamic typing is insane. You have to keep track of the type of absolutely everything, in your head. It’s like the assembly of type systems, except it makes your program slower instead of faster.