Subject: S&P Valuation...
Here's a question for the masses...

...if you were sitting on a, for example, 70% gain on SPY or VOO and lived in a high tax state where $100 of sold S&P 500 would result in $75 net, would you start seriously considering a sale to free up some cash and hunker down for the inevitable reversion?

This one has sure been itching me lately as I hate giving up 25% with a 100% chance to avoid giving up 50% with a (say) 20% chance each year for the next 5 years.

Thoughts?