Ruby is very cool as an easier, shinier, more ergonomic and elegant Perl but the lack of block-based lexical scoping with compile time checking (use strict + my, duplicated as "use strict" and let in ES6, much to my happiness when using javascript) and the fact that while Ruby's core OO is much easier to use than bless() it's horrifyingly limited when you're used to Moose/Moo means I've always bounced off it when I've tried to learn.
Perl's sheer flexibility means there's a gulf between baby perl and good complex perl during which the developer doing the learning tends to make a complete mess (I definitely did this for a while) and some people never get past that stage so a lot of pre-existing perl code is awful and much though I love perl myself the language is definitely at least partially to blame.
Perl's sheer flexibility means there's a gulf between baby perl and good complex perl during which the developer doing the learning tends to make a complete mess (I definitely did this for a while) and some people never get past that stage so a lot of pre-existing perl code is awful and much though I love perl myself the language is definitely at least partially to blame.