With millions of unwanted animals euthanized every year in shelters, and with the horrendous conditions in the puppy mills around the country that serve as the supply chain for pet stores, it's a no-brainer to me that animal adoption is the way to go when you're looking to bring a pet into your family.
It's certainly the most compassionate approach. But it's also a choice that's saves money -- often substantial amounts.
For a cost ranging from free to $200, you can have a fully neutered, loving (and I swear --- grateful) pet.
Compare that to the cost of a pet store dog that runs into the hundreds and even thousands of dollars, and most likely came from one of those previously mentioned, horrific puppy mill besides. It just makes sense to adopt.
My family has always adopted our dogs, ever since I was a small child.