In reply to Andrew Mallinson:
Just for the sake of ruining an analogy to death...
Because when your brother says that he hates you and runs away - you worry about them, love them and want them back. You are related to them and grew up with them.
Of course it might be that they say "Don't be so clingy OD - I'm off to seek my fortune in the big wide world - and you just slow me down, and you steal most of my pocket money. I'm better on my own" And sometimes that might just happen.
But more often than not, they haven't really run away, they are just round at Nicola's house getting stoned and discussing socialist utopias.
Or - more frighteningly - they have gone down to Uncle Alec's who tells them "You are a big boy now - my friends want to meet you..."
And before you know it they have been introduced to Brian and Ann: "Do you want a bit more pocket money, wee boy... here's what you have to do..."
And before you know it they are selling themselves, one piece at a time, with dreams and hopes in tatters.
But we can always remember - when we were together, we were brilliant.
We had a great scrap with Adolf, when he was bullying the whole neighbourhood. We built some bloody good electrical toys together (well okay, they had some of the ideas, I just let them use my bedroom to build them).
And whatever happens, however much they piss you off (or vice versa) they will always be family, and together we can take on the world...