I have an indoor cat and aside from the occasional whine about wanting to go outside and catch birds, he doesn't seem to mind at all. It's better and safer for them to be indoors. Cats are easy. Not always social, but generally simple to take care of. You don't have to walk them, they know where the litter box is, and are an endless source of comfort and amusement.

Kittens are rambunctious. Be warned of that. They love to attack, pounce, and generally bother you. But they are trainable. I know I'd be very lonely without my kitty, Kipling, to keep me company. He sheds enough to carpet a small country, but I wouldn't trade him for the world.