I think it's because they think that if the market is down they will have some losses. But I think instead of complaining because the market is down why not take this as an opportunity to buy and sell it at a higher price inthe future.
Right and this is also because they have lost a part of their portfolio in the red market. Some have also sold the portfolio due to panic selling which is a human error. You do not have to get emotional in the market. A rational individual will always stick to the initial plan and might also change the strategies according to the changing market structure as well. The red market is an incentive for investment.