I think you can only get kids into fishing by taking them. You will only bore the pants off them talking about it, Kids like to try new things out, the younger the better.
My 3 sons all came with me at a very young age, it might have been for an hour to start with.
The most important thing is make sure they catch, I found once they catch, you have the kids hooked. The other thing is, don't take them for hours and hours, as they can also get bored catching, its a fine balance.
I was lucky, I had some good waters local, and the boys would catch Roach, Perch, of just a few ounces, with the odd bigger one. Thats why I think commies can play a part in getting kids into fishing. Don't be fooled into thinking all commie waters are easy.
My only concern with some commies is that its just carp, carp, carp. Not Good
As my sons got older, it was whole weekend sessions, and i would often have one of the boys mates joining us.
I forgot, they can also learn more about the wildlife, and see things that their mates my not see. Owls, Badger, Deer. Kids love to tell their mates what they saw, and that can bring other kids not fishing.