It never ends!
As long as you don't smoke anymore, and you budget yourself to never spend more than you did smoking, then it's worth every dime IMO. I haven't broken "even" but I haven't spent more than I've saved either... By a long shot...
I've saved almost $1000 since I've stopped smoking... But I've only spent maybe $600... I have a few eGo batteries, AGA-T, Phoenix, Terminator-C, a couple of Vivi Novas, a handful of T3's, a bunch of cartos and a couple of tanks, some stardusts, Lavatube V2, Vamo, ProVari, a bunch of DIY supplies (enough to make like 2.5 liters of juice), a Chi Chi, a boat load of wiring and wicking materials... I mean it's a LOT of stuff...
And as long as I stay under my smoking budget, I feel like I win... I have $400 in my pocket, and it tells me that a greek mechanical is required in my entourage! Poldiac, here I come! LoL!