As the title states, why do cats have such an obsession with wanting doors to stay open?? My cat drives me crazy sometimes, where she will cry and cry outside of my bedroom door to come in, and then right after I let her in (if I don't leave the door wide open enough for her to just walk back out) she cries to go back out! It's particularly starting to get bad at night when I go to bed because I purposely have to keep her out of my room or she will keep me up all night getting into mischief (she barely sleeps during the night, and she's still a hyper and curious kitten). Any suggestions? She has free range of the house except for a few doors that we keep closed, such as the bathrooms or my bedroom. My sister always keeps her door open but of course the cat has no interest in her room at night, go figure!