I do agree with you overall about indexing, however "Just wait until the recession is over" is market timing and I dont believe I (or others) can do this dependably well.
One can argue the way to judge stocks value is not by P/E but by E/P relative to interest rates; that is whether their excess return relative to risk-free assets is justified by their risk.
Interest rates remain 5% below their long-term historical average, which can justify E/P going up significantly. Currently stocks offer a 3.5% return over some classes of t-bonds, well in line with historical norms.
The current danger is that both will move down at the same time, and then where should one invest?
https://www.quandl.com/data/MULTPL/SP500_PE_RATIO_MONTH-S-P-...
check how high it was in the 2000 and 2008, we're aren't even close
My fear is that the central banks are pumping so much liquidity into the market that they are driving up equities and pushing people out of safer assets into things like high yield bonds and momentum stocks. If we do have a recession, the pain could be worse than usual (for stocks) for the mere fact that the debt market could have liquidity problems when tons of funds begin to pull their money out at once from HY.
Not to mention all of the corporate buybacks that companies are doing by leveraging, because cash is too expensive to bring back overseas.
You can still invest in solid companies, but companies like Tesla, Netflix, anything with a super high P/E is going to be taken out back and shot (that doesn't mean the companies will go out of business, only that their stocks are much like Amazon in the 2000s.)
Not that I disagree with you, but I believe a contrarian viewpoint would be something along the lines of "We are currently in the midst of an economic revolution as increasingly large swathes of activity are digitized and lingering mechanical/human processes are computerized. Companies likely to be successful in this new economy are unlikely to be the same ones which were successful in the old."
(To which the obvious rebuttal is probably "People are always saying things are about to be different, and they're usually wrong.")
The 2008 bubble was eminently predictable. The problem was that no one knew the exact trigger, and no one had a politically acceptable means to deflate the bubble until the domino effect started, and then hedge funds and then major banks started collapsing.
Until the knife started falling, no one had a financial incentive to stop. After all, subprime mortgages have crazy interest rates, and if you're BoA or JP Morgan Chase, the government will probably step in to stop your collapse...
Not even close to a record high. It's slightly high, but is it surprising that people are will to put a premium on earnings with negative interest rates?