If you really cannot manage that, then your second best option is to have a wealthy spouse. It's not ideal, but it's better than nothing.

Bonus bragging points if you're born with a certain ethnicity that has no options but to enter in that niech market because the mainstream ones have high moats around them.

What state would make investing illegal?

Not sure about the second part of your question - buy different assets maybe?

There's probably some tax benefits. And a good chance they won't touch it for the first 18 years -- By which time you might have given them a taste for compounding interest :)

Agreed, the step up at death on the cost basis would be advantageous but then you have to be dead.

And there is a scheme with yearly taxation of unrealized gains, but at a much lower rate. However, it has a per-person cap around 16k USD.