Don't worry man...
I am sure that your dad, must be a proud father and with this rare feeling of fullfill in his life. He has a son who is contributing, who shares with others. Who tries to help other people and make them a bit more happy with some littlle but useful information.
I respect persons who "give". Without fee, without obvious motive. Who just find the time, the mood, to "give" to someone else. I am totally certain, that this element of your personality, is a result from your father's influence. He deserves our deep and best sympathy and compassion. For sure.
Stand strong and as "happy" as you can, when you face him. You wanna keep and remember a peacefull and shiny picture of him. Good luck, man...
