There are a lot of dangers in WDW that come to mind before abduction. What about a child watching a parade who suddenly darts out in front of a float? Could you get to the child fast enough? Maybe. What about waiting at bus stops? So many times, I've had to hold my breath watching little children playing at WDW bus stops. There is no way those buses could stop should the child dart out suddenly. My point being that kids are fast. It only takes a fraction of a second for a child to put themselves in danger. Very often, it isn't something we'd even think about as dangerous. A child and ride track could be lethal under the right circumstances. I know that many will say that their kids know better or that they are the type that never stray. It only takes once. As noted earlier in this thread, I'm sure the family from England never dreamed their 4 year old niece would run from their side and be killed by a car during their vacation. Accidents happen. We all do what we think best to keep our families safe. If a leash is not for your family, that's fine, but please don't judge those that feel it is right for their kids.