It is never easy to have a pet. Ownership requires a certain level of responsibility. Very similar to taking care of a small child, pets need lots of attention. At a certain age, they can not be left on their own. Moreover, pets must have food, good training, essential grooming, not to mention play and exercise.
Pet food must be healthy to avoid excess weight - which could be bad for the heart. Play is necessary to ensure that the pet gets enough exercise to provide balance. As an owner, your pet would need you to walk him, or feed him and where applicable, bring him to the veterinarian periodically to make sure that the pet is always in tip top condition.
Of course, it is quite normal for pets to feel unwell sometimes. Even humans get out of sync from time to time. For pet dogs, annoying fleas, allergies, urinary infections, even arthritis, must be addressed and you would definitely need your petmeds at vetdepot.
If you don't have a dog, you can probably get a cat. And if you can afford it, a horse. Otherwise, it would not be bad at all to take care of a fish. Why not?
Last but not least, love your pets.. that is the most essential part of getting a pet. You might be surprised, how fulfilling it is to take care of something which can give you enormous happiness.