Oh, my! I had been thinking the EXACT thing about my 3 1/2 and 1 1/2 year olds! No, I don't think you are being overprotective at ALL. It is a very real concern. I am so glad I am not alone! Even with your children "not out of your sight," we all know that a child of this age can take off in an instant. I watch my kids like a hawk and twice in his 3 1/2 years my son has disappeared from me momentarily. That is a terrifying experience, and it only takes once. Anyway, I am also concerned about the pins in the badges, mine are always running around, and it would be just like my older son to trip over his too-big feet and fall on that pin. Now, how is THAT for worrying about the possibilities?!! LOL Best of luck with your decision, I still haven't completely decided yet.