I have never had a dog that I could not have off leash. But they were every breed but Husky. LOL
I don't even trust our dog parks (I stopped going to them 10 years ago because of past experiences with bad dog owners) But I even worry when they are at daycare. Luckily their daycare has a double fence and my pups are flagged so they are watched very carefully.
My neighbor's kids came by one day and opened my front door. Just stood there with the door open. Before I knew it, the pups were out the door and down the street having the time of their life.
I started door training them. It's taken awhile but they are getting better.
After that day, seeing how they had no recall when ADD sets in, I will always keep mine on a leash.