My sincere condolences. It's hard to really know somebody on-line but when you spend enough time you get a feeling about their personality and their character. My impression of your dad is that he was honest and generous. He showed great sincereity and respect for himself, his family and others. He'll be missed here. I know that pales in comparison to your loss but I hope you'll take a little comfort from knowing that his life made a positive difference for those us that knew him here.

Take care and may time do it's work in turning your sorrow into the joy of having known him and having part of him in you.