In fairness when I was that age I moved pretty much every year. I think I lived in about 7 different places in Dublin in 10 years. Sometimes it was because the house was a bit shit, sometimes it was because my roommates were a pain in the arse, sometimes it was because I wanted to change neighbourhoods to be closer to wherever I was working, and then later on it was to live with a partner etc.
You could say that actually it's an advantage of renting to be able to move so much.