Old generation would leave us sooner or later. It is part of the cycle of life. Eventhough we don't want it, human will die some day. By accepting the fact makes it much easier for older generation to go and for us to let go. I am sure our grandparents, parents would like to see us live happily. They won't want to be the cause of our sorrow.
During transition between phrase of life often force us to let go of something or someone.
When we go to further our higher education abroad, we left our family and friends back at home.
When we go to work in bigger city or other country, we left our friends.
When we found someone special, we spend more time with our someone special and neglected our friends and perhaps family.
When we get married, family comes first, friends comes later.
I believe everyone of us is a friend. A friend can't be compare to family. Family always comes first. I, from the view as a friend, learned to let go a friend. When a friend found someone special, I am happy for my friend. It is not that simple. This also means I have to let go my friend. I can't spend much time for my friend. When a friend gets married, Family is my friend's world. So off I go... hahahaha