It can go both ways, either good or bad. What matters the most is how you prepare yourself or the kind of plan that you have made before investing in the market. Some people are fond of investing too much more than they can handle when the market starts to dip. And in that case you might be in a position where you are in need of the money that you have invested in the market.
You would have no other alternative than to sell when the market is bearish and that means you have lost your money for good. So, the bearish trend can affect some people negatively. It is only good when you invest more than you can afford to risk and if the market starts becoming bearish you can then have enough money to also buy more coins.