I'll worry about it when I have it. But my current thinking is along the lines of: 10-20% in highly speculative stuff (much more so than stocks) and the rest in super-safe stuff (much safer than stocks).
what's more speculative, and what's safer than stocks? If you're looking for low volatility, bonds are often touted as 'safer' - but look at how safe they've been over the last decade.
There's a risk/reward balance in every asset, I don't think ruling out stocks based on the perception that they're risky is necessarily wise.
