Well, a lot of us use 4% or 3.5% or whatever % of assets for withdrawals since it's a lot easier than trying to figure out what the net profit is on 2 iphones and whatever other part of each company we own through a mutual fund.
I don't think you can ignore the $100K paper loss but count a $100K paper gain on a stock surge that may have overshot it's value. Things tend to balance out over time. The market will recover, sooner or later, because the overall trend of the market is upward, along with the US and world economy. But it's not clear whether this was an unwarranted drop that will recover quickly, or a correction to a market that was too high, and will only recover through normal market growth over a longer time.
