The best thing for them is to go through some difficulty in life.
Don't let them starve, but to give them everything is a dis-service to them
& the world. Teach them the value of work and respect; perhaps set up
a trust where they can only get so much if certain milestones are met.
Such as when the kids are 30, or they get something if they do some humanitarian work.
Tie it to a lifestyle requiring them to not drink or smoke or do drugs...
Be inventive, come up with something that is a challenge for them.
We had to wait; pass it on...