So invest in s&p 500 and do nothing, right? That's a good strategy for someone young, because it makes sense to be risk tolerant then. As you age you want more

So invest in s&p 500 and do nothing, right? That's a good strategy for someone young, because it makes sense to be risk tolerant then. As you age you want more and more of your portfolio in bonds/cash, because you want the reduced fluctuation in purchasing power (i.e. comfort) that that brings you. These are the bare fundamentals of portfolio management.