I totally relate to what you are saying, however I grew up in a house FULL of people (myself, younger sister, mum & dad, and we ALWAYS had a few relatives stay with us).
I stayed at home when I went to University and I was a rich student so I loved it. However, i went crazy when one of my cousins came to live with us and I wanted to hurt him (he was lazy, ate but never contributed or cleaned up after himself, just a complete WASTEMAN). So i moved out cos i coudln't take it anymore, and bless my mum and dad they are too nice but I don't have patience for bulls**t, and I can talk when i want to.
I've lived by myself now for a year and a half and i'm absoluntely loving it. I could never move back home although I have considered it as i'm now a post-gard student ... but that's not the point!
I live alone, in a beautiful flat which i love, always clean, food in the fridge, no-one hogging my computer, or leaving mess, no relatives, it's great wouldn't change it for the world. Only downfall is I miss my Mum, Dad and Lil'sis but they're only 5 minutes drive so i'm blessed.
And yes, the grass is always greener on the other side ... lol.
Enjoy the madness x