if you didn't watch after these kids, would they be left alone??
it's not right for your housemates to neglect their kids
you may be the most important person in these kids lives right now, so try to make the best of the time you have with them
share your concerns with your housemates
they need to realize that those kids are only going to be young once, and they will regret missing out on such a valuable time that they can never get back