Then I assume that your child has never been out of your sight for more than 30 seconds, ever.
And since I've read stories about children being abducted from their bedrooms in the night, I assume that you stay awake at their bedside all night long.
The fact is that, despite hysterical reporting to fill the 24 hour news cycle, child abductions by strangers are no more common now than they were 50 years ago, and in the vast majority of missing children cases it's a parent that's responsible.
Frankly, the better question would be if you've ever been out of sight with your child for more than 30 seconds.
You’re right. Things happen all the time that are out of our control. But this isn’t one of those times. This is something that someone chooses to do because it is easier for them. Of course a child cannot be watched every second of every day, but why add a danger into their lives that is avoidable. I let my kids run in the house, but I don’t hand them each a pair of scissors before they take off through the hallways. I don’t understand how any reasonable person can think that it is ok to leave a 4 year old alone in a parking lot.