Bears may think they are smart because the market always has downturns, but the truth is that in any market, those who make money are always the bulls, not the bears. During a trending market, it's easy to gain excess returns.
Bears can never gain excess returns and may even lose money.
Short selling requires precise judgment of market tops, but ordinary people do not have this ability. Even though many top traders can see market tops, most of them will not short; instead, they will close their long positions because it's hard to predict how crazy the market might get next.
You must stay away from and ignore those who constantly urge you to short, even if they are right a few times. Developing a habit of short selling will eventually lead to losses.