I think that many of us (dog owners and non-dog owners alike) have a lot of experience with dogs in our daily lives, and that can contribute to opinions. I know it's contributing to mine.
This morning my DH and I were talking about this thread and the dogs/owners in our neighborhood (we're former dog owners). There are 10 houses, 6 with one or more dogs. We decided there's a pretty full range of dog behavior, as well as levels of behavior management skills in their owners, from the excellent, to the seems good but not a lot of data, to the loving but unable to control owner/poorly mannered but lovable dog, to a mildly inconsiderate owner (presents in front of the house), to the owners with aggressive dogs. I understand it's a small sample. I also see that range, some examples more frequently than others but all, in my town as I go about my day. I have no idea how widespread utilization of this will be, or who will choose to bring his/her dog, or if they will be following the rules, but I know the range that I see every day and since I'm locked into my trip, in order to make the best of things I have to consider it.
Just two hours ago, I was reading this thread and then I tried to leave to pick up my son for an appointment. There was a woman trying to walk her goldie, and a loose dog was being aggressive to the goldie. They were partially in my yard, blocking my egress because they were in the entrance to my fence. I then recognized the loose dog as my next door neighbor's. This dog is aggressive to me and my family on a daily basis, but he's usually in the house or yard, and he does know me. I felt like I had to help the woman, since I know the dog and I didn't want any involved to get hurt, but was trying to stay out of the dog fight. The owner came out but couldn't get it under control. Eventually, we got the dog back in the house. During my efforts, you guessed it...I stepped in dog poop in front of my house left by probably the inconsiderate owner two doors down. I thought you might appreciate the irony in this story,
@Mackenzie Click-Mickelson ! Thankfully, I could throw on a pair of extra shoes so I wasn't late for my appointment!