You may not own gold now, but keep your mind open to the idea. Some analysts have suggested that a small position in gold would offset a big loss in other assets. A stock crash opens a pandora's box of ugly economic possibilities. Credit excesses get liquidated and the economy slows into a recession or depression. The dollar weakens.
All asset classes lose value.
Interest rates go way up because of a falling dollar. Bankruptcies fan liquidity fears in bond funds. We could go on and on. Suffice to say that a stock crash will dramatically change the economic landscape and gold will be back in the limelight. Although stocks have rebounded, the fundamental imbalances remain.