eventually the cats will just take over my life

This is Banana. One night several months ago I didn't have a clean water bottle, so I put a plastic cup of water on my windowsill to drink out of. She totally stole it.

Then, when it was empty, she meowed piteously at it. When I took it away to wash, she meowed piteously at the empty space. Now there is always a full glass of water on the windowsill.

Yeah, like you could resist. She's not only adorable drinking out of her cup like that, but she purrs LOUDLY whenever I fill the damned thing.