Midori i do agree, I've been bitten alot. The last time was a few weeks ago, when an overly friendly lab kept jumping up at me on a walk along the lane, a neighbours dog who wasn't on a lead and normally walks to heal. He bit me just behind the knee when i turned to move away as he was getting too boisturous against my bump, I had 8 stitches. He didn't mean to bite me, and thinking back, I think he must have liked the tail of my scarf. The most innocent of dogs can make a mistake, I wouldn't want him muzzled because of it or put down. I still talk to him if he's in the lane when I am.
My sister was attacked on the street when she was a toddler, by a dog we knew well and had stopped and petted many times. She was eating something at the time, sweetie or crisp and the dog took a bite, but he also took a large chunk off her face, cheek, nose and top lip were left loose. He was an old dog and never ever bitten anyone, he didn't mean to, he didn't want to, but he did. My family didn't call to have him put down, as owners of dogs we knew that accidents happen, however locals who got the wrong end of the stick threatened the elderly owner of the dog and so he was put down [the dog, not the owner] and that was unfair.
Neither of us are scared of dogs, my sister works with dogs and has one of her own. It was a random attack that's scarred her for life, but she doesn't let it stop her enjoyment of dogs.
There are places that you expect dogs to be, parks and open areas [fields and the like]. Children need to know how to respond to a dog. Shrieking and running around is a game to a dog and more likely to barrel off after you [my MiL did this and doesn't understand why her response is wrong] If you don't like dogs, the best thing a child can do, is return to their parent/carer in a calm way. Picking the child up can help, as it makes the dog less 'scary' to the child.
I don't have a dog myself, I don't mind other people's dogs, I wouldn't go out of my way to pet them, and depending on the dogs/footwear/legwear I may avoid them. Nothing pleasant about a cold snuffly nose on the back of your thigh.
I do find it a bit rude that some people decide to walk in the park [which is popular with children and families] when we live in a small village that's surrounded by fields, woodland, footpaths etc. I know dog's need to be exercised, but they can still get their daily exercise when on a lead. My sister has a route that works for her and she prefers to let off steam in a quite place she also thinks it's unfair to let a dog off the lead if you know that there are families/children playing nearby. A football can tempt even the best intentioned dog.