I had a colleague who was into cycling. It was his uttermost passion, the biggest thing in his life.

His kid didn't like cycling, he likes wakeboarding. My colleague absolutely hated it, said it wasn't really a sport, said you didn't have the suffering that you have riding a bicycle.

After some weekend on one of his rides (alone), he came across a father and a son. The son was all into cycling, took his dad everywhere. The dad didn't really like cycling, but his son was so passionate that he was willing to ride long distances with his son.

My colleague noted "I wish I had such a son", but in my mind, I thought "Your son probably wishes he had such a dad".

You will have to decide what kind of father you want to be, the one where your kid follows your passion, or where you follow your kids passion. The first option will not result in a close relationship.

And as a father of 4 myself, it seems most kids don't really have an extreme passion. And if they do, it shifts quickly. Plus, when you talk about your passion all the time, they will soon be pretty bored by it, don't want to hear about it anymore.

Just enjoy the time you spend with your kids, do fun stuff that you both like. You can always discuss dinosaur stuff with people who are as passionate as you.