You're close.
I's more like if when your kids aren't around, you get sick.
And it would be incredibly easy to go get your kids back. Like maybe they're just at their grandma's house or something, idk the analogy gets kinda weird.
So you get sick, and not just "feeling a bit green," but fetal position, rocking back and forth, vomiting, runny nose, achy muscle sick. You'll grind your teeth and it's all you can think about, followed by weeks of insomnia.
And after the initial WDing, starts Post Acute Withdrawal Syndrome, 6 months to 2 years of feeling shitty (depression, insomnia, mania, restless legs, cravings). And the worst part is a simple phone call and a 20 minute drive could make everything better...at least for a little while.