Thanks for the detailed explanation, jcl! I think it's finally sunk in.

So in other words, reinvestment (including adding additional Capital) is a really good thing. Not only does it make the account grow faster, it also reduces the risk.

What's the relative benefit of this risk reduction? Are the other risks much larger and this benefit is insignificant by comparison, so just withdraw and party? Or is this particular risk reduction a significant benefit and funds should be reinvested whenever not needed to be withdrawn?

Thanks!