If you insist on combining children and dogs, research breeds very carefully and commit yourself to learning and taking all the steps necessary to make the combination work. See the Resource Review section for more information. Just because your lifestyle and interests change doesn't mean you can abandon a dog like a used toy. Divorces, job changes, relocations, and new babies happen. If you can't be as close to certain as humanly possible that your retired racer will be part of your life for all of his life, don't adopt.
Greyhounds are easy live with but they do have special needs.
Their lack of body fat, long thin bones, fragile skin, and sensitive souls means they need to be protected from extremes of temperature, rough environments, and inappropriate handling. Thousands of years of breeding to build quick reaction times, create blazing speed, and to foster work away from and independent of human direction means they must be kept safely in fenced areas or on leash at all times. Adding a retired racer should never be an impulsive gesture. Don't adopt because you feel sorry for them or because it's fashionable. To paraphrase a bumper sticker from the Association of Pet Dog Trainers, A dog isn't just for Christmas.