So I have a father, now what?

So I just got off the phone with my baby and due to a trip that I have to take to Merrillville tomorrow, I'm going to drive the extra 45 minutes to see him! Hoo-rah! (from the movie Jarhead). I get to fall asleep in his arms tomorrow so you know I'm geeked right???
Anyways, we just got done talking about my father and his not being an active part of my life. I didn't meet him until I was 19 and I haven't spoken to him since I was 21. Crazy right? I was telling him how prior to this past Christmas , I had the attitude that if my father wasn't trying to be bothered me, why should I try to be bothered with him. But due to the fact that I spent my first Christmas morning away from everyone that I love, I've been having a change of heart. I was telling Mr. Smith the story of how I tracked him down after my mother told me his name after I asked her. The moment I knocked on his door, my entire body went numb. I remembered him opening the door, looking at me, and knowing EXACTLY who I was. I can't remember if he hugged me or not due the numbness, but some physical contact was made. We talked and talked. He apologized for not being there, told me about my other brothers and sisters (not the ones I talk about in my profile). It was a truly profound experience in my life. I met his wife, Ola or Ora. She, of course, didn't like me, which I picked up on immediately. Maybe she thought I was after the Billion Dollar empire they had amassed (LMAO!!)
We got to know each other somewhat. I got to see some of the similarities we shared. I had his Asian looking eyes. We both loved movies and enjoyed building a massive movie collection. He worked for a computer company, and I like computers and anything with a button to press, lol. He showed me a picture of my grandfather, who had passed long before.
Gradually, I began to notice that if I called, Ola/Ora would always answer the phone and say he wasn't in. If I stopped by, she'd simply crack open the door and tell me that he wasn't in, then close the door (good thing I didn't have to piss, right???) After a few months of this, I had reached an emotional climax and poured out all of my feelings about him, her, and that treatment into what is perhaps the longest letter I've ever written in my life. Of course when I went to hand deliver it to HIM, she said he wasn't in and that she would give it to him. I remember laughing after I left because at the close of the letter, I left him all of my contact info and told him that from now on if he wanted to talk to me, he would have to reach out to me. But he never did.
So now I'm thinking, should I try to reach him again, or should I just leave our relationship where it lays, 6 feet under???