Many, many congratulations to you! Being a father is one of the most signal honor's a man can have in this life.
My son is 18, graduating from High School and going on to study Engineering at the top University in the state which is thankfully about 20 minutes from where we live. We are very close, I was a single father and had sole custody of him from the age of four until I remarried when he was 10.
Boys decide their own interests, it's not our job to make them do what we do, but more to give them opportunities to explore interests and do what they enjoy. I have always been into martial arts, I encouraged him to try it and enrolled him, he didn't stay in long. I was never a jock, I was in Band in High School, played some tennis and later got into golf. In grade school they get to try different sports, and there are opportunities to play outside of school. He played soccer for a while, then baseball, then basketball, but always just for fun and none of them carried over into high school athletics. By then he had gotten into Band, he has played percussion through Junior High and High School. The grade school years sports were a LOT of hours spent together going to practice, then going to games. Sitting on the sidelines or in the bleachers cheering them on, consoling them when they lose, those are precious memories. Oh, and don't forget the camera!
Video camera, too...
High School, going to football games every Friday night and watching the halftime show- I don't really give a FLIP about High School football, but I do care about being there for my son. That's what it's all about.
What else? Caving, rock climbing are a couple other things he enjoys, I never did these things.
He's a great kid, 3.5 GPA, 28 ACT, various academic awards, no smoking, no drugs or drinking, no legal encounters or unplanned pregnancies. I'm very blessed, and very thankful for my son. I'm sure you will be too- God bless.