In my opinion, one major advantage of having a pet is that they can replace people and become one of our nearest and dearest. For instance, if someone lives alone he would find it very enjoyable of having a pet. Furthermore, presence of an animal at home may provide greater feeling of security (especially when this pet is a dog). In addition to this, pets often play the main role in both, the handicapped and disabled people’s lives.
Nevertheless, keeping a pet involves lots of responsibilities. Firstly, there are some extra costs which appear along with animals. The pet-holder always needs to calculate constant expenses into budget, because his favourite requires food, equipment (cages, collars, aquarium, etc.) and probably veterinary treatment. Apart from this, if you decide to buy a pet you will certainly tied yourself up with this animal, because from this moment you will always have to, before going anywhere from town, take into consideration your pet's needs.