Sometimes I think I expected too much.
Too much from a friendship.
People don't owe you anything.
They are not your parents.
It's a plus point if they are nice to you.

Sometimes I am wondering why friends start to drift away after a long time.
I guess the longer you know people, the less effort you put into the friendship.
I know it's a not investment, you cannot expect a certain amount of return base on your effort.
It's funny that when you enjoy the companion of your new friends,
but you cannot feel your own existence with your old friends.