When I'm clean, I'm reallyyy clean.
When I let it get messy, it's really messy. Not hoarder-like, but pilling up trash and laundry. It's gross.
In general, I think if I have a nice place to live it, it's only right that I keep it clean and nice.
With roommates, I was very tidy. Not scrub the floor down every day tidy (maybe every month). But, if there was a pile of the same dishes out for days on end, clean or not, I would put them up.