Caring for a kitten can be very different from caring for an adult cat. A cat is no longer a kitten when it turns 1 year old. Kittens require more time for socialisation, and will need more medical attention initially.
You should consider your lifestyle and how much time, effort and money you’re willing to devote to your furchild.
If you have a busy working family, an adult cat can be a better option. Kittens have endless energy and kitten-proofing your home in case of accidents is a must.