I completely agree. There is no guarantee that they will invest wisely. Adversity is a great teacher and wisdom is the fruit of that labor if not somewhat liberating. I think through that wisdom, the phrase "never enough" has much more meaning. 10k needs to be 100k after time passes and we keep finding excuses to inflate that number.
It is not.
The same way as winning big in lottery usually leads to misery, the same way huge inheritances do not really make people happy.
It is better for your descendants to earn their wealth themselves (whatever that wealth would be).