They're either not a nuisance and cute to look at or they present danger. That danger can also be to small children who aren't prepared to deal with a dog, or know how to be around one. It will never be the child's fault in that case because they have priority over the dog.

I've owned dogs before and I just cannot fathom even being audacious enough to ask if a dog can come in. It's dumb. The dog probably doesn't even want to be there. They hate new places with new people and people getting close. Things can only go wrong or normally, not better.

So people just need to keep them out. I'm not going to speak up though because it doesn't bother me.