Many moons ago, I knew a guy who was a world-class sailing ship modeler. His stuff was in museums all over the world.
His wife was the type who indulged the kids in anything they wanted to do, which was a constant source of irritation to my pal, who was raised in a very strict household where the kids did what the parents told them to do, period. I guess that's how he was able to develop the discipline to build such amazing sailing ship models with working sails...
Anyway, the day came when they were old enough to be aware of what daddy did, but not nearly old enough to assist him on the level he needed (keep in mind, this was his job, as one model could take 6 months or more of non-stop work to build). His wife wouldn't let it go that there must be something they could do on the ship models as it was important for her to have the kids leave their mark on things. He didn't see it that way, at all and it got really ugly at one point. Building their own ships wasn't good enough, the wife said, the kids needed to work on the projects their dad was making. Myself and a couple of others seriously worried for his marriage at this point.
One day, he'd had enough of the wife pushing for the kids to do work they couldn't possibly do to his standard. He knew none of them ever paid attention to how he laid out the masts and sails, so he made a 'kit' for each of them to mount onto a ship-outline board. Build sails that'll work, he told them, then they could build ships with Daddy.
He had three kids then, the oldest wasn't even 10 yet. None of them had ever done anything like that before. You can imagine the outcome. A customer was coming over the following weekend and he set out the models the kids had made.
The client, a very wealthy person of discerning tastes, was shown past all the components of the model and then came to the sets of sails the kids had made. The customer looked really worried and asked, "You're not putting those sails on my ship, are you?" When my pal said no, the customer looked very relieved, "Oh thank God," he gasped, "Those are the worst sails I've ever seen!"
The kids, of course were crushed. After the customer left, he said to the kids, "Okay, that guy's a jerk, right?" The all nodded in agreement. He continued by saying, "You don't want to waste your time doing model work for a jerk like that, do you?" The kids shook their heads. Of course they wouldn't.
They went to the mother that afternoon, saying they had no interest in doing what dad does because the people who buy the ships are big meanies.
Not a great thing to do to kids? Maybe. But I got where he was coming from. This was how he earned a living, something he'd spent a couple of decades mastering. No kid would ever catch up to his skill and no customer would ever buy a model they'd worked on at that age.
My Dad is on that guy's level, building amazing artillery models. As a kid, it was made very clear to me that this was Daddy's work, period.