I never regretted getting Max (as you can probably tell from the fact that I remember everything about that day, including what I was wearing). I do, however, regret giving money to the pet store industry. Pet stores get their puppies from puppy mills that crank out dogs like sausages, and treat the "breeders" like machines -- think chicken farm with dogs piled in cages instead of birds. Then, the pet stores keep the puppies isolated in cages during their critical socialization period, teaching them to go to the bathroom where they sleep, and otherwise creating dogs that make poor family pets, while millions of healthy dogs are abandoned and euthanized at shelters every year.
Max turned out to be a great dog, but we were lucky. Don't do what I did. If you're going to get a dog, go to the shelter or a reputable breeder. Sorry for the preaching. I guess I needed to get that off my chest.