AuBadge already said it, although I would make it a point to say you were dependent on cigarettes, and yes, you traded one dependance for another. Owning up to what it is takes the wind out of any argument brewing.
My wife and I are separated. When I first started, I was using 21st Century e-cigs, and she would complain that the smell bothered her. Never mind that I had finally quit! No parade for me, who smoked his entire adult life to that point, and got constantly ragged on by her for not having the mental "balls" to quit cold turkey like her (I shouldn't even get started on that. She smoked Ultra Lights, I smoked Newport 100's and eventually, Swisher Sweet Little Cigars at over a pack a day) I quit and heard the same lines "you just traded one addiction for another!" "It smells awful, use it outside!".
I switched to my eGo and the last couple visits have been great. At first, she didn't even ask until a day later what I was wearing on my lanyard. Then, when she smelled Red Bull, she asked me at first if I had just burped. I said no, and she turned and saw me exhaling vapor. Right when I could see she was about to lash out, her whole face changed and she said "That's what you meant by
vaping Red Bull?
That's Red Bull?" and ever since, not a word of complaint.
(She's a one-can-a-day Red Bull drinker)