Agree totally, unfortunately the problem is although they're domesticated, some natural instincts can come out of these dogs when you least expect it.
Less than 2 weeks ago, a local middle-aged lady was mauled, and had her arm "nearly eaten off!" by one of those precious animals, chopper-lifted to Hospital in Melbourne, I doubt she'd agree with you.
As you said, it's the owners...but what happens when they're not around? The thing she did wrong was to take it for a walk for one of her family members.
I'll just stick with my 'pocket-sized' jack russell, at least I can kick its arse!

[edit] Btw Cassa, great looking old dog you've got there!