, like Nephy said, go with it.
I've been thinking recently about my own grandfather, and well that I haven't wanted to know him. I knew he existed, but there wasn't really anything there.
He left the family when my mum was at uni, and he was a drunk and abusive husband and father. And basically let my mum down on so many occasions, including with money. The story or assumption was that he was somewhere in Africa and I could well have half aunts and uncles younger than me. Turns out that's true, but they've moved to the SW of england now. He died about 6 or so years ago. I did ask a few questions about family history, and that's how my mum ended up getting in touch with his sisters (on her own, she was then interested, even if she does blame me). But it wasn't about him, more that I was asking in general family history. It was always known to be a blackspot, and if my gran ever knew that my mum had seen him again then we're expecting an explosion. But I've thought about how I haven't wanted to meet him and in no-way do I miss not having a grandfather, because that guy was never considered to be one.
On the other hand, there was a guy who I met on a plane when I was 16, and I so want to meet him again. It's a what if. I felt a big connection with him, and disastrously we managed to mess up meeting up in the city we flew to, and I never knew his surname. I didn't really know him, but I wish I did. And data protection will stop me ever finding out .
Good-luck with it though.