Should you give your mobile phone to your kindergarten-aged children and expect it back in o­ne piece?

Victim
Mr. Likes Meddling with Mobile Phones of Aichi Prefecture

Scene of Accident
Living room sofa

Broken Item
Vodafone V501SH

Details of Accident
I have two kindergarten-aged children, and they really like mobile phone cameras. I thought they were playing with o­ne of the old mobile phones I have sitting around after changing, but it seems they were playing with my V501SH, which I had just gotten in a handset change. But, thinking it would be immature of me to just forcibly take it away from them, I just waited for them to get tired of it, but somehow neither of them had it after a while. "What the..." I said as I searched the sofa, and I discovered my V501SH which had been bent the wrong way. It seems to have somehow fallen victim to the two of them sitting o­n it.

Repair Costs
It's not covered under after-service, so it'll be about 18,000 yen (still using it as-is)

More from the Contributor
It seems that small children won't learn from experience even if they're scolded. I guess that's the carelessness of the adult? Even though you can't see most of the screen, all of the functions can still be used, so I'm just using it as is for the time being. I realized that Vodafone should come out with their own G-Shock mobile. But, maybe even G-Shock can't withstand this?

Inspired by:
http://k-tai.impress.co.jp/cda/readers/crash/27243.html