Older dogs are often overlooked in shelters and rescues. However, they make excellent companions and often have many more years of love and devotion to give to their new family. You also know exactly what you're getting. What you see, is what you get .... how big the dog is, usually fully house trained and no more destructive chewing. . They are happy and content to lay in a nice warm spot while you're gone from home. They enjoy a nice "quiet" walk in the park. No more pulling and tugging, dragging the owner all over and making it impossible to enjoy the outing.
Senior dogs make wonderful pets for senior people as well. They fit a much slower paced life style and do not require the time and patience of a puppy.
So, the next time you're considering a family companion, please consider a senior. I have a house full of them and I wouldn't trade one of them for a "puppy".