We too have a fox family living nearby, and who visit our garden late in the evening and sometimes early morning. Since they have lived here, it keeps the neighbour's tom cats away, thank goodness! The foxes have lovely coats and tails and look quite healthy, but they are still quite wary and shy. We often put left over food out for them when we go to bed as we believe it keeps them more healthy than if they have to scavenge for everything.
It is inevitable that they are going to upset some people with their antics but I'd rather have a fox than a cat in the garden. As with all wild animals, treat them with respect. They are not pets and children need to be protected, but also educated about wild animals. Provided you wash your hands after coming in from the garden and take sensible precautions with personal hygeine, there should be few health problems.
About 3 years ago, there was a young fox cub asleep curled up on the mat outside our patio door and we later managed to watch the whole group, and take a few photos across the fence when they were playing with an old gardening glove. We've found toys, odd shoes and other things at the bottom of our long garden, which we presume the foxes have played with. Last year my husband was quite intrigued as he found a couple of eggs buried amongst the potato plants - again, probably by the foxes.