"Is it worth it?"
AG is sometimes expensive to set up, time consuming and definitely not convenient - particularly if you have a family.
That said, neither is the time and big "$$" people fork out annually on Football season tickets, golf memberships, speed boats, ski trips whatever tickles your fancy!
It all depends on you and what you want out of brewing?
You can see the obsession here on this site, because in the end for AG brewers its all about the "taste" and perfecting a certain style, otherwise why all the effort?
Also, IMHO there are certain styles that can never be nailed properly except through AG, pilsner/lager as an example.
First time I ever heard about mashing I was some what intimidated and "gob smacked" as its a bit of a shock from the simplicity of kit brewing, and your question "Is it worth it?" was asked by myself and most AG brewers. however, within 12 months from my 1st K&K I was "taste driven" to AG brewing.
If you have Tasted decent AG beer, then you know how good it can be, the decision of "is it worth it?* isn't really the question, for me personally to make anything less isn't worth it.
Cheers,
BB