I am a trader who does not use Short Selling even...
If you don't use short selling, then what do you do when the market turns bearish? I don't think it's the right strategy to stay away from the market and wait for months for the market to turn bullish again.
A downtrend in the market should show a buying trend if we have a significant amount of cash because it is more likely to get more currency for less money at the same time. I think the decision to withdraw from the market could cause more damage.