I'm honestly not worried about kidnapping. I'm worried about a child getting lost and ruining the entire trip.
I can't imagine a child getting kidnapped at Disney and not hearing about it though.
But I do know that kids get lost all the time there. And I just don't want it to be my kid cause that would be very scary. Mostly for me, LOL. The kid might get scared but often they don't even realize they are lost per say, they are just distracted ya know.
But for me, it would ruin the whole trip and might even taint WDW for my husband and I.
If you've never "lost" a kid you may not understand how really terrible that feeling is...
As far as when I let my older boy start going to the men's room by himself, now that he is 15 (he as Asperger's), I honestly don't remember the exact age. I am guessing 8, but really it might have been 7. But honestly I don't remember and I don't think it was 6, but it could've been, but not at Disney, I doubt I let him go at 6 at Disney by himself. But I also doubt I had to, cause my husband was always there.
I have another 6 year old right now. He doesn't have Asperger's as far as we can tell. But, I still feel more comfortable having him with me when I go to the bathroom in certain places. Not everywhere. Not every time, but at Disney I prefer it. Fortunately though my husband is there and my Dad goes with us every year, so I don't think he's ever been in the women's bathroom there unless it was when he was still in diapers, ROTFL. Or when he was very messy at dinner and knew Dad wouldn't clean his awesome Mickey shirt up to my standards. Last year he was 5, this year he is 6. IF faced with having to take him with me cause his Dad and Grandpa are elsewhere, I'm taking him with me. That's just how it is.
The thing is, this thread asked a specific question about how you feel, your opinion about whether or not you feel 6 is too old to be taking a boy with Mom to the bathroom. It didn't ask you to JUDGE other people on whether or not they are wrong in THEIR choice (last I heard, this was a free world and we do still, at this time, some control over what we do with our kids), to take or not to take their 6 year old boy to the bathroom with them.
So what does it matter how old my boys were???? Oh right, it's cause there are so many judging people who would rather turn this thread into "ohh you're a controlling hovering Mom", rather than keep it on track by answering the original question answered".
I think either way is fine as long as you, the Mom, the parent, are comfortable with it. We only have our children for a short time, yes, it's our job to teach them, to mold them, to protect them, to do what we as a parent feel is right for them.
But let me say, my privacy, or my teen daughter's privacy in the bathroom is _not_ more important than the loss of your son. Even if that is a temporary 5 minute or less "loss".
I'd rather see a little boy, just being silly, nothing sexual, peek through my stall cracks, than to walk out the bathroom and see you frantic because your son used the men's room while you were in the ladies room and when he walked out he saw something rolling in the wind down Mainstreet and decided to chase it and now you can't find him. I've been on both sides. The side of that Mom and the side of the witness to someone frantically looking for their kid.
.