S&P 500 down 41.9% for the last year

[Storebought]

I'd rather invest in a 1930s stock market (price collapse due to general deflation) than a 1970s stock market.

I said last month or so that I increased my index fund purchase, precisely because September-October are historically dreadful months for stocks. I've lost tons in the meanwhile, but I do kind-of like the idea of buying shares at a time when the whole world is puking them.