I'm not in that situation, but, if you're young and generally enjoy spending time with others, I'd continue on and use this time to save in a way that is probably not possible later. If the real problem is that people aren't cleaning, you might try to get everyone to agree to a power hour of cleaning every Saturday (key: remember to include beer during power hour for proper motivation). My old buddies hosted a weekly barbeque, mainly, to get the house clean. They noticed they only really cleaned when girls were coming over. So they invited a bunch of people over for a big bbq every Wednesday, and the house somehow got cleaned every time. It worked great.
If getting your roommates to clean isn't working, it may still be better financially to hire a cleaning lady rather than letting the frustration of a dirty house push you to an ultimately more expensive living situation.
e.g. - the refusal to pay a cleaning lady $100 every two weeks, causes you to take on $700 in additional rent every month. Financially, it's best to clean your house, of course. Still, better to take the 2nd best option than the distant 3rd.
Another factor is your inability to later choose to go back to your current living situation; but you can, and will forever be able to, rent or buy a place and share the costs with other people should you choose that later.
As for owning vs. buying, it's important to really run the numbers. I agree that it feels better to see how you're owning an asset but there are cases where renting (especially if you're setting up a rental situation wherein you split costs with a bunch of people) can be better financially.