The last time I saw my dad, it was about 10-11 years ago. To that point, I hadn't seen him in about ... 7 years? He was around for like, the first six years or so of my life before he and my mom split. From that point, it was mostly just him sending birthday and Christmas gifts to my brother and I from that point to the time I turned 18 (my brother is a year and a half older).
I told my pops what I was up to (had just earned a full-ride scholarship to college). He cried and said he was proud of me and gave me the strongest hug I've ever received from him.
I have some dormant resentment toward him for not being there, and as a result being a better father to my future kid(s) than he was to me is a HUGE goal of mine, but having asked my mom about that relationship ... it was best they split. I do want his side of it, though. Just want to have THAT conversation with him, for real.