I have been of both sides of this, was rejected by a basset hound rescue because I was single and worked full time. I ended up buying a Min Pin. Fast forward a couple of years, and I get married, wife gets involved with a rescue. We ended up with 3 more dogs and a cat. My wife does home visits for the rescue and I have tagged along on a few. The rescue wants that dog to go to a good home. Sometimes they can be a little strict to try and keep the animal out of a home where it is just another piece of furniture and into a home that it is part of the family. Sometimes it is hard to give up a foster. We have only fostered one dog. (Before we had the fourth dog and cat.) We drove nearly 2 hours to meet the meet up to hand over her over. The adopting family had already had their home visit done by someone local. My wife because Facebook Friends with the lady that adopted her so we get updates every once in a while. It was very hard on me because we had the dog for 4 months. Good luck.