Just imagine if kids adopted bitcoin years ago and played online games which rewarded free satoshis as prizes. That would have been great and also a big boost for executing plans which demand financial resources they want to achieve when growing older.
Sure, it would helped them out. However, I'm not aware of any games that offer that, and I doubt the type of games that offer it would be that much interest to kids. The thing is, I'm not a fan of using your kids to earn more money, it just sounds like exploitation to me. Kids should be able to pick what they want to do, within reason of course. You shouldn't be telling them to play a game, because it'll earn you Bitcoin.
Kids aren't kids for very long, they should be enjoying their time with zero responsibilities, rather than looking to earn money as soon as possible. They've got to earn money for the rest of their lives, and we're all adults trying to escape that, so let them be a kid.
Years ago there were some flash games where it was pretty easy and fast to accumulate some thousands of satoshis playing a little every day.
I don't know how interesting these games would be for nowadays kids, because graphics and games alternatives have evolved and changed so much since my childhood, that flash games could be ridiculous for them now... But personally, for me it would be great to play these games while earning btc as a kid, because I've been doing this since ever without earning any money, only for the joy.
Right now, the only games of this kind I'm aware about are smartphone apps which deliver classic arcade games paying satoshis rewards. However, the rewards are terribly low.
On the other hand, I believe in some years there is going to be decent online multiplayer games with fully developed and sustainable internal economies, where kids will be able to play and start building their bitcoin portfolios.
And to play/adopt bitcoin or not must be up to each child to decide. They don't need to exchange their childhood for bitcoin, but introduce bitcoin to their childhood with harmony and balance.
As a kid, I've never been worried about financial life and now I somehow regret about it, because my life as adult could be much more confortable if I did so before back then...