Love both, but I'm too lazy for puppies. It was a lot of work kitten proofing our house (they're like toddlers who can climb), but once it was done, there were no accidents, messes, or training needed.
Kittens are definitely easier and I was always a cat person growing up. That being said, we just got a 10 week old Sheepadoodle last week! She is entertaining our 9-month-old Goldendoodle so I think it was a good move for us. Both puppies and kittens are fun!