My son is turning 6 and loves everything about our cattle farm, tractors, hunting, and just being outdoors. He has always liked them without any pressure from me. Although during his first 4 years that was all he knew. But, I expect his interest to change once he hits the teenage years. Then it's fast cars, loud stereos, atvs, and women. I won't blame him, I was the same way growing up. Loved to help Dad farm, go hunting, and help him work on things (saved me $$ through the years), but I went through that teenage stage of cars, music, atvs, and women. It wasn't until I was in my late 20's that I realized I had quit doing everything I liked as a child. Needless to say, I am hunting, farming, restoring tractors whenever I get the chance.
My son is just now getting into sports (basketball/baseball) so we spend a lot of time practicing. I loved sports as a kid and couldn't get my dad to play with me at all, so I am taking the time to play with my son. He's getting quite good for his age too. But we still make time for the cows, deer, turkeys, and tractors.