None of the above reasons are valid excuses for getting rid of a dog. It's okay not to be a part of the solution, just don't be a part of the problem. Now, if you are truly serious about owning a dog and are prepared to spend the next 12-15 years of your life caring for it, you have to choose a dog who fits your personality type and is going to be able to adapt to your established daily routines. The three most important things to take into consideration before adopting a dog is the size of the dog, its activity level, and how much grooming and training is required to keep the dog healthy and active. You can determine most of these characteristics by the breed or breeds of the dog, but don't simply rely on this alone.
All dogs are individuals.
That is why it is important to talk to the workers at the animal shelter to get the full scoop on the particular dogs that you are interested in before you bring one of them home. While you are at the shelter, ask the workers and volunteers at the shelter questions about each dog that you are interested in. After narrowing down your selection to a few dogs, you must find out how well you bond with each dog by spending individual time with each of them. Find out from the shelter if you can go for a walk with each of the dogs, or if there are separate rooms in the building where you can be alone with each of them. Keep in mind though that when you first approach and enter a dog's cage, the dog is likely to be a little more excited than usual, so jumping up on you and trying to get in your face to greet you is natural for a shelter dog at first.