we do.because when we die,we will be more aware in the spirit world than we are here.

Seriously? Cavemen already had an idea the spirits of their ancestors were around. This idea, changed in a lot of belief-based variations, stayed with us until today. Actually, I believe this is the first time in the history of mankind that a substantial body of people denies the existence of the spiritual altogether.

My dad died in 2004 and I remember quite vividly lying in bed a few hours after he passed and feeling his enormous fingers poke me in the back between my shoulder blades. It made me sit up and laugh. The feeling was unmistakably my Father. So yes, I think your father can see you and hear you, but maybe only for a short time until he chooses to move on, but some are stuck in the astral and wonder for a good while before moving on. That's how it seems to me.