What are the pros and cons of owning a cat?
Companionship (most cats will snuggle up to you and sit in your lap, and they want to snuggle with you even when other humans spurn your company), purring, fun playing with the cat, cuteness... especially when they are kittens, but it lasts. :)
Cats demand attention, cat hair on furniture and clothing, litter box smells, costs related to care and feeding. Responsibility: having to clean the litter box, get the cat spayed or neutered, feed the cat, etc. If you're allergic to cats, then that is another negative (although there are many allergy medications that can negate the symptoms).
No matter how long either list is, the relative value to you as an individual is what you need to measure. If you like cats, and feel that taking care of a cat is worth the companionship offered, then it is a good idea.
Answer: in other words cats are better than dogs