I always hold long SPY, only problem I have is with how artificial everything is, everything is being manufactured specifically to push prices higher (manipulation by fed, white house, buybacks etc), you have trump and co calling for QE and rate cuts on a daily basis while the economy is supposed to be "strong" (despite the fact that growth and earnings are slowing both here and worldwide), and the last time the fed did raise rates markets crashed by 20% swiftly. It's a zombie market, blindly marching higher, and it's not healthy at all. Recessions, declines, volatility are normal and needed. Constantly pumping the market with stimulus and cheap cash is a recipe for disaster. It's probably futile to try to fight this trend, at least until elections, but let's see. I know I sound like one of those paranoid perma-bears who have been shorting and buying gold since 2011 calling for recession every single year, but I just don't like when things are too easy, and now things are damn easy.
I always laugh when I see articles like this, I picture them being archived in museums as signs of the excess optimism and exuberance right before a massive crash: