Yes, the whole cycle really stinks when it comes to dogs and cats in Pet stores. It's really a no-win situation. The poor animals are in there because of the greed of puppymills relying on the cuteness factor of the animals to sell them. Most of the time they are under 8wks of age and unhealthy.
The sad thing is that if nobody buys the animals, most will be sent to laboritories for experimentation!