Funnily enough, it's the few years of Perl+Moose I've done since which has made a switch back to python just over a year ago a bit hard to stomach. Now that I've tasted something resembling an expressive type "system" (however narrow, incomplete and warty it is), which encourages immutable objects, and does so in a very painless and idiosyncratic way - while still bringing many of the benefits of declarative/"up front" programming for free - I really, really miss it.
So of all the things that could have made me realize I've had enough of dynamic languages, it certainly feels odd that a Perl OO bolt-on would show me a glimpse of what I've been missing out on. And even weirder that the closed-mindedness of the average pythonista made up my mind to move on.