Man, you've got some introspection to do, because I'll tell ya what, you've been spouting full-blown addict babble. If you're just here because the wife's been riding your ass to quit, it ain't gonna work out for you. Why? Because you'll only end up building up resentment for her because "she's the reason" you're feeling withdrawal symptoms, and you'll start sneaking dips (if you haven't been doing this already). Can't quit for your kids, either. Why? Because you'll try to rationalize your dipping by telling yourself "Oh what do they know, they're just kids. They don't even understand what dip is." Can't quit for mom and dad. Why? Because you'll tell yourself "I'm my own person now, they don't run my life anymore." My point is, until you quit for you, you'll always find a reason to go back to it.
When you quit for yourself, your inner dialogue changes. You'll still try to rationalize your dipping, yes, but you'll also know that you chose to quit for yourself and it's a decision you made for your own well being as a man. You can hide from your wife and kids and sneak a dip in, but you can't hide from yourself. That's why you have to quit for you.
If you're waiting for a reason to stop, it may be too late. What, are you waiting for it to start causing you problems first? If so, it's often too late by that point. If you have even a hint of ability to learn through the suffering of others, go take a look at the cancer gallery and read the cancer stories like Nomore said. And as you do, realize that these aren't just people with bad genes (I used to tell myself that all the time). These aren't people who got just plum got unlucky. These are regular people like you and I who told themselves "Oh, I'll quit one day," didn't, and are either severely disfigured now or more likely, no longer with us.
And after all that, if you still love what you see, I have no choice but to write you off as being batshit insane. Flush your cans down the toilet and quit, man. We'll help you stay quit, but you've got to want it yourself.