...the Answer?

The real value of some people, is understood when they are already gone.
Sometimes we don't realise how much these people mean to us, while they are just beside. We realise it, when they are already gone, or when you go apart.

I was trying to think why it happens like that.
May be it is about a pride...about a freedom...?...a difficulty to accept something within them or within ourselves..? ...or being too busy?...a perfectionism?...just blindness?

I don't know.