Your money is safely earning interest and you get a break from market induced anxiety. You have a strategy. This question will especially haunt you when the market has turned against you. The temptation to sell everything until you HAVE a strategy will be enormous and irresistible. Random Timing Methods Do Not Work.
Most investors use random timing methods.
To make their timing decisions they use Hot tips. Conflicting expert advice. Emotion and greed. This is the type of timing that never works over the long term and gives market timing a bad name. It's driven by emotion and greed and always results in buying high and selling low.