Interesting! As generous as it is to give 100K, when you say you will use 900K to have a merry old time wouldn't that be a waste?
Well, bearing in mind that this 1m is fictitious...
No, absolutely not a waste. I'm not one of those MN people who thinks that "100k isn't all that much really".
No, it won't set you up for life, but at 25, you could put 50k down as a deposit and use 50k to support retraining.
I don't have 100k, or 50k. I saved up 50k with my husband (whilst our salaries were 35k and under), bought a house, and my share is now worth 80k. I saved another 20k and used it to tide me over when I burned out and am working part time now whilst retraining to go freelance.
We're managing our money with a plan to retire from employment at 55 (with some odd bits of income generation we're building up now).
I will teach my children that you earn to live, not live to earn. That hoarding up vast amounts to put your kids on the same employment treadmill as you were on is needless. That there's so much more to life than work, and money and your possessions don't own you.
Not make them think that 900k is something worth jealously guarding. Money is only any good when it's spent.