My son.
He's not really an "outdoor" type person.
I can get him to go with me once a year or so,and afterwards he'll tell me what a great time he had, but the next time it will be "not this time dad".
Fly fishing was the one thing that my father and I had in common and I still take him a few times each year. He can't fish anymore but he loves sitting in his wheelchair on the bank watching.
(You would be amazed at what a good angler you can be when it's not you doing the casting )
Maybe when my boy is older he will grow into fly fishing (17 next week).
Till then I'm not going to push him.