Cats are awesome indeed.
Sirius can't open doors, unless they are ajar. He will not even try it. He knows how to get us to do that; by sound.
If he decides he wants attention at night, he'll start with a soft sound. He has listed all scratching places it seems. He builds up till the sound is thus that I am sure he will either wake the kids, or the neighbours. Three times I decided not even to react then. That is when he went for wallpaper on a thin double wall at the outside of the bathroom. In between he will check up on my breath, to see if I am really sleeping or not. When he realises I am faking, he now and then will use his nails to get me awake. There are nights I despise the critter.
But when he purrs, while I want to sleep, I love him to bits again. He's a great companion to sleep with.
Not that I wanted to have cats in the bedroom at first. But, Luna can open any door that is not locked or bolted. So, every night before I go to bed, I have an extra reason to check on my locks. She's the caring critter in this household. When the youngest was a kid, she'd come and defend her, slapping me, if we were mock-fighting. She grooms all of us in this household. According to my oldest, she's the second mother in the house.
When she purrs, it is with a happy rattle in it. She is the talkative one of the two cats, with lots of different tone effects, sometimes she sounds like a bird.