Values and morals and such things of that nature are important whether you realise or not. It has become apparent that friendships can withstand time, distance and lifestyle if these values remain somehow intact. say for instance, your best friend in the world is dragging babyseals out of oil spills in antarctica and you work as a desk monkey at reece's plumbing in suburbia, no matter what job you take or lifestyle you are amongst, if they share just some, not all (but some) of your values - the friendship remains intact. If these disappear, weakening the bond, it wouldn't matter if they lived a few streets away, it's over red rover and you have to recognise.