Our Nintendo had taken the guise of a small but toxic drug which, little by little, was poisoning my children.
When they had had their fix, they were even more frustrated and discontented than before.
Interestingly, Dr Susan Greenfield, writing last weekend in the press, seems to suggest the same thing.
A specialist in brain degeneration, Dr Greenfield has a new book out which predicts that young people are headed for a mass loss of personal identity, thanks to the amount of time they spend in the interactive realms of things like Nintendo.
"The time is well nigh," she said, "to explore the impact of these technologies."
Well, I don't want to explore the impact any more. I know what the impact is on my children.
I have first-hand evidence that using a Nintendo turns my delightful, curious and funny children into argumentative demons full of aggression, wholly uninterested in anything apart from playing, and then playing some more.
At the same time that all the children started crying and yelling before breakfast, I spotted Phoebe's cello and I realised that she had not got it out of its case all week.
Yet she had notched up probably around eight hours on the Nintendo. There and then, I made my mind up. The Nintendo had to go, and to hell with my children 'fitting in'.
But how to get rid of it? I mused on the idea of giving it to my sister, a mother-of-five, but rejected that on the grounds of child cruelty.
I considered selling it on eBay, but rejected that on the grounds that I didn't want to waste any more of my energy on the hideous thing.
In the end, last week, I walked into my local branch of Cancer Research UK and gave it away.
"Would you like this Nintendo?" I said. "In perfect condition, with a bundle of 20 games. Plus charger."
The lady behind the counter smiled broadly. "What a fantastic gift," she said.
I returned to stunned disbelief from the children - "You did what?" - and floods of real tears.
Since then, however, our domestic life has been transformed.
The children have swung back into their old habits of reading, playing the violin, walking the dog, occasionally fighting, cooking and making things.
Do they mourn for the lost screen-based world of the Nintendo? Actually, I think they've forgotten all about it.
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