5 year old vs. 23 year old

So I went to vegas this weekend and came home to a mess. It's frustrating because my roommate(s) seem to be incapable of taking care of things. Why do I have to be the one cleans the apartment. Why am I the one to always clean the bathroom. Why is it that my nephews and neices are cleaner than my roommate(s). Its sad when a five year old does a better job of cleaning up after himself than a 23 year old. I could be just too tired to think rationally, but I don't care. Stop being so irresponsible and clean up after yourself.